Arduino call codes

#include <SoftwareSerial.h>
SoftwareSerial mySerial(3, 2);

int pirsensor = 10;


void setup() {
  randomSeed(analogRead(0));
  Serial.begin(9600);
 mySerial.begin(9600);
  Serial.println(" logging time completed!");
  pinMode(pirsensor, INPUT);

  delay(100);
}


void loop() {

  if ( digitalRead(pirsensor) == HIGH)
  {
    Serial.println("making call");

    mySerial.println("AT");
  updateSerial();

  mySerial.println("ATD+ +63************;"); //phone no. censored
  updateSerial();
  delay(20000);
  mySerial.println("ATH");
  updateSerial();

   delay(2000);
  }
  if ( digitalRead(pirsensor) == LOW)
  {
    delay(1000);
  }
}


void updateSerial()
{
  delay(500);
  while (Serial.available())
  {
    mySerial.write(Serial.read());
  }
  while(mySerial.available())
  {
    Serial.write(mySerial.read());
  }
}