How do you stop the talk-back tutorial in an lg cell phone with metro pcs as the carrier?

[AC Question]

how do you stop the talk-back tutorial in an lg cell phone with metro pcs as the carrier?

Accidently the tutorial for the smart phone was started and we can not turn it off. She is talking about the talk-back features and we can not do anything with the phone. We can not stop the tutorial or her voice from being herd. We can not make a call or answer one; we can not access any of the phones features. We have tried to turn the phone off and on; change the batteries, etc....