Poor Service

My has a contract that ended Feb/ Mar , went to the store ( Westgate Mall ) to cancel the contract however he was informed to cancel he need to contact customer service. Hes a pernsioner and has ear challenge he then asked me to call customer service i was to that he needs to personally contact them to cancel the contract , i explained to them the challenges that hes not able to contact customer service . The agent over the phone requested my dads details and they will contact him for cancellation which it never happened. My dad went to the store MTN westgate to try his luck again and he was told that he needs to go back to the store were he took the contract . He took the contract in Mall Of North Polokwane , so he must now drive all the was from Gauteng to Limpopo just to cancel a contract. I called the store in Westgate spoke to the store manager Ronald explained the store gave all my dads details " Let me check ill come back to you " which he never did this happened early this month. I called the store after a day and i was told hes in a meeting , Called again after a week i was told hes on leave/day off . I called him he mentioned that he assigned this matter to Grace to do a follow-up which it never happened. He then promised me to double check and contact me back 14/05/2024. Today is the 15/05/2024 im still waiting for him to call me back. While my father being billed for a contract that he doest want anymore. Im really disappointed by the service of MTN Group , i dont wanna mention the store cause the service is horrible. They taking advatage of my day because hes old and doesnt have time to run.