This all sounds odd considering you are using Serial.print() for debugging:
// There may be some conflict with softwareSerial and Servo Library So Hc-05 will be using Hardware Serial
//#include <SoftwareSerial.h> //Software Serial Library for HC-05 Bluetooth Module - this module act as a Slave and sends the data to the master or receive the data from master
//SoftwareSerial BTSerial(A0,A1); // TX, RX
. . .
. . .
Serial.begin(38400); //hc-05 is using hardware serial , 38400 is HC-05 Default Baud Rate
What, if anything, have you got connected to pins 0 and 1 ?