MTN - WHAT A NIGHTMARE DOING BUSINESS

My contract with MTN came closer to the end date. I've phoned numerous times, sent emails to confirm that I will be cancelling my contract from the 11th on July. I gave 30 days notice and confirmed back in May that I will be cancelling (#*** & #***) of which my emails was ignored. So I phoned the retention department, was told that I can only call in on the 11th of July otherwise I will be paying a penalty. I phoned again in the beginning of July just to confirm, were told I need to give 30 days notice (which I already have done numerous times). The gentlemen assisted me so well and confirmed that it will be cancelled from the 14th of July, the last payment would be just over R200, which was in order. (ref:***). Even got a sms to confirm if has been cancelled. So another full debit order was deducted from my account on 25/07/2022, when I phoned to find out what is going on, I was told that the last statement was sent to me before I cancelled the contract. (Ref:*** (keeping in mind that since May I've been sending emails and phoning like crazy). This is utter nonsense. Go and check all records and reimburse me. Your service is horrible and the excuses is even unacceptable.