Two new contracts added to my father's MTN account without his permission

My father has been a loyal customer of MTN for more than 20years. MTN forwarded information to my father, yesterday, Wednesday, 19.06.2024 as proof that he registered to new contracts (SIMS), of which he has no knowledge of. He is in his late seventies and unable to sort this matter out, because now they want him to go to the police station for an affidavit, but his vision is poor so he cannot drive and this whole situation is causing him extreme anxiety due to his age. MTN or any other institution is supposed to speak to the account holder and do a record of advice and sign a contract as part of the application and completion of new contracts. This was not done. So now my father is under extreme stress due to MTN's process handling.