CreateCustomerNoteRequest createCustomerNotesRequestInfo = new CreateCustomerNoteRequest();

//FIRST WRITING NOTE TO OLD ACCOUNT TO SAY ITS BEEN COMPRIMISED AND SHOW NEW CUSTOMER NUMBER:
            createCustomerNotesRequestInfo.UserName = username;
            createCustomerNotesRequestInfo.Password = password;
            createCustomerNotesRequestInfo.SystemToken = "sysToken";
            createCustomerNotesRequestInfo.Note = new CustomerNote();
            createCustomerNotesRequestInfo.Note.CustomerNumber = cloneCustomerNumber;
            createCustomerNotesRequestInfo.Note.Category = new CustomerServiceWSDL.LookupItem();
            createCustomerNotesRequestInfo.Note.Category.Code = "GEN";
            createCustomerNotesRequestInfo.Note.Details = "Account Takeover – Fraud. Acc – " + customerNumberTextBox.Text + " closed as compromised and new account " + newCloneCustomerNumber + " created matching existing data";

createCustomerNotesResponse = soapClient.CreateCustomerNote(createCustomerNotesRequestInfo);

try
            {
                for (int i = 0; i <= notesCount; i++)
                {
                    customerNotesArrayList.Add(getCustomerNotesResponse.Notes.Items[i]);
                    //i++;
                }
            }

CreateCustomerNoteRequest createCustomerNotesRequestInfo = new CreateCustomerNoteRequest();

for (int i=0; i<=notesCount;i++)
            {
                CreateCustomerNoteRequest a[i] = new CreateCustomerNoteRequest();
            }

CreateCustomerNoteRequest[] a = new CreateCustomerNoteRequest[notesCount];
for (int i = 0; i <= notesCount; i++)
{
    a[i] = new CreateCustomerNoteRequest();
}

// now you can use the array outside the loop as well

for (int i = 0; i <= notesCount; i++)
{
    CreateCustomerNoteRequest request = new CreateCustomerNoteRequest();
    var response = soapClient.CreateCustomerNote(request);
    customerNotesArrayList.Add(response .Notes.Items[i]);
}