As the person who created the Phone Guy's sounds and voice, I have to say that the only problem with the phone call script (not the code) was that it was too long, and the programmer didn't make the call code a safe point. Interestingly, the audio for the first night is 2 minutes and 35 seconds long, and each night is 6 minutes long, meaning each hour of the game is 1 minute long. So you would just be listening to the Phone Guy's nonsense, and after 1 minute, the Phone Guy would finally start explaining the mechanics of the animatronics.