BAD CUSTOMER SERVICE

I'm very disappointed with the bad customer service I have been experiencing from MTN call centre and the retention team and customer service on twitter. 2 years ago I took a cellphone contract hauwei y9 R99x 24 mnths. Contract ended on 3 Feb 2022. I called call centre early in Jan 2022 to update my email address, up till this date, they haven't. When I called on 3 Feb 2022 to cancel my contract because it was expired, the consultant who was assisting me informed me that her system is slow or offline, dnt remember her exact words, but she couldn't help me because of the system, and informed me that she was going to ask her colleague to assist with the matter, but up till this day I'm not assisted. Ref no for he query was ***. Instead MTN debited my account R60 without my consent, which means they are forcing me to continue with this contract.I have called, sent messages on twitter but no 1 is helping me, till 23rd when i reversed R60 debited in Feb, then received sms that I'm now owing R71. I've been MTN's customer for years, and I have never experienced such nad customer service, especially when cancelling an expired contract. I have no doubt that I will never ever take any contract with MTN, this is very very disappointing.