MTN’s **** service

I have received the absolute worst service from MTN , I have a few contracts with them which I have been paying the same amount monthly since I’ve taken out my last contract last year. This month they’ve decided to debit me extra when I phone to query this they say I’ve topped up my contract which I have not done and have given no authorization for them to do so. when asking for the call recording as well as a refund and my contract to be set back to what I signed for they log a ticket or query this was done on the 24th of September and tell me call back Monday, I call back Monday because the Billing department doesn’t work on weekends, I must call back Tuesday call back Tuesday their systems are downs call back Wednesday that ticket number has been closed with absolutely no feedback. So I do the process again they tell me call back in 48 hours I call back today oh sorry the billing department doesn’t work weekends call back again Monday. This is honestly ridiculous and I will never take out another contract with MTN again they have debited my account ********ly and I will definitely be taking them to the ombudsman and how convenient that I never received a statement for the month I was debited extra. Useless bunch