Switch case problem

do {
            System.out.println("1. Klienci 2. Produkty 3. zamowienia "
                    + "\n4. menu zamowien(dodawanie produktow do zamowien itp.) 5. exit");
            option = sc.nextInt();

            switch (option) {

                case 1:
                    System.out.println("1.Dodaj Klienta 2.usun klienta 3.pokaz klientow 4. menu glowne");
                    option = sc.nextInt();
                    do {
                        switch (option) {

                            case 1:
                                System.out.println("Podaj Imie Klienta");
                                u = sc.next();
                                System.out.println("Podaj Imie nazwisko");
                                y = sc.next();
                                Klient k = new Klient(u, y);
                                s.addKlient(k);
                                break;

                            case 2:
                                System.out.println(s.showKlient() + "\n podaj numer ktorego klienta usunac");
                                option = sc.nextInt();
                                option = option - 1;
                                s.delKlient(option);
                                break;

                            case 3:
                                System.out.println(s.showKlient());
                                break;

                            case 4:
                                break;
                            default:
                                System.out.println("No such option");
                                break;
                        }
                    } while (option != 4);

                    break;

                case 2:
                    System.out.println("1.dodaj produkt  2.usun produkt  3.pokaz produkty 4. menu glowne");
                    option = sc.nextInt();
                    do {
                        switch (option) {

                            case 1:
                                double d;
                                System.out.println("Podaj nazwe produktu");
                                u = sc.next();
                                System.out.println("Podaj Cene");
                                d = sc.nextDouble();
                                Produkt p = new Produkt(u, d);
                                s.addPro(p);
                                break;

                            case 2:
                                System.out.println(s.showProdu() + "\n podaj numer produktu ktorego usunac");
                                option = sc.nextInt();
                                option = option - 1;
                                s.delPro(option);
                                break;

                            case 3:
                                System.out.println(s.showProdu());
                                break;

                            case 4:
                                break;
                            default:
                                System.out.println("No such option");
                                break;
                        }
                    } while (option != 4);

                    break;

                case 3:
                    System.out.println("1. dodaj zamowienie 2. usun zamowienie 3. pokaz zamowienia 4. menu glowne");
                    option = sc.nextInt();
                    do {
                        switch (option) {

                            case 1:
                                try {
                                    if (s.getKlient(0) == null) {
                                    } else {
                                        System.out.println(s.showKlient() + "Podaj numer klienta do ktorego przypisac zamowienie");
                                        option = sc.nextInt();
                                        u = s.getKlient(option - 1).toString();
                                        Zamowienie z = new Zamowienie(u);
                                        s.createZam(z);
                                    }
                                } catch (IndexOutOfBoundsException e) {
                                    System.out.println("Pierwszo utworz klientow/badz podaj poprawny numer");
                                }
                                ;
                                break;

                            case 2:
                                System.out.println(s.showZam() + "podaj numer zamowienia do usuniecia");
                                option = sc.nextInt();
                                option = option - 1;
                                s.delZam(option);
                                break;

                            case 3:
                                System.out.println(s.showZam());
                                break;

                            case 4:
                                break;
                            default:
                                System.out.println("No such option");
                                break;
                        }
                    } while (option != 4);

                    break;

                case 4:
                    System.out.println("1. dodaj produkty 2. usun produkty 3. menu glowne");
                    option = sc.nextInt();
                    do {
                        switch (option) {
                            case 1:
                                try {
                                    System.out.println("Podaj numer zamowienia");
                                    System.out.println(s.showZam());
                                    option = sc.nextInt();
                                    option = option - 1;
                                    System.out.println("Podaj numer produktu");
                                    System.out.println(s.showProdu());
                                    q = sc.nextInt();
                                    q = q - 1;
                                    System.out.println("Ile dodac produktow? Prosimy o wmiare male liczby");
                                    w = sc.nextInt();
                                    for (int g = 1; g <= w; g++) {
                                        s.getZam(option).addProdukt(s.getPro(q));
                                    }
                                    System.out.println("Gotowe :)");
                                } catch (IndexOutOfBoundsException e) {
                                    System.out.println("Nie ma zamowienia o takim numerze, badz produktu!");
                                }

                                break;

                            case 2:
                                try {
                                    System.out.println("Podaj numer zamowienia");
                                    System.out.println(s.showZam());
                                    option = sc.nextInt();
                                    option = option - 1;
                                    System.out.println("Podaj numer produktu");
                                    q = sc.nextInt();
                                    q = q - 1;
                                    s.getZam(option).remPro(s.getZam(option).getProdukt(q));
                                    System.out.println("Gotowe :)");
                                } catch (IndexOutOfBoundsException e) {
                                    System.out.println("Nie ma zamowienia o takim numerze, badz produktu!");
                                }

                                break;

                            case 3:
                                break;
                            default:
                                System.out.println("No such option");
                                break;
                        }
                    } while (option != 3);

                    break;

                case 5:
                    System.out.println("Ending Aplication");
                    break;
                default:
                    System.out.println("No such option");
                    break;
            }
        } while (option != 5);