MTN THE ******* SERVICE PROVIDERS

I have had a contract with MTN for 2 years. Its been 7 month's and mtn is still continously charging my account. I went into the mtn store to have it cancelled, they advised me that for some pathetic reason or the other, it can only be cancelled by dialing a number which they've given me. I waited on the line for 3 hours and 30 mins, after speaking to someone who transferred me and when my airtime eventually ran out i received a sms saying my query had been closed. Today, they called me again, offering to give me a upgrade and I said to the guy this account has been paid as per our agreement, i requested for it to be closed,why are you still charging me. Again, i was told to call a 169 number. I then get through to a customer service agent who calls himself "menzie", who asks me to call back in first a hour because he couldn't transfer my call, then in 2 hours and then at 3pm?????? I called at 11:30 am. This is clearly a company who doesn't have any concern for any financial difficulties people might be going through during a pandemic and who strives to make it difficult for their customers to cancel any contract taken out with them as they will continously rip of their customers by taking money from our accounts long after the contract has ended. I would probably have to call them back and wait another 3 hours to get this resolved which i hope i will but i regret ever taking out any contract with mtn and i would suggest everyone who has any contract with them looks out for this.