Telkom - Incorrect billing and suspect

I have been trying since yesterday to sort out a bill on my account. When you call the call centre they either transfer you back and forth between billings and cancelations or hang up on you. Lungela, Lucrecia, Katlego, Thulani, Mbali and Mbali (there are two) Hangelani. All are working from home, which means that they have carte blanche to treat customers the way they want. They have incorrectly migrated my package and charged my R13000 for this. Further to this they then suspend my service because the credit limit is too low and the balance is too high, but no one checks that they are the reason my balance is too high. Needless to say I am waiting for a call back... no one is sorting out my issue and everyone is telling me about their "process". Well what about the process of customer service

They said that they resolved the issue, but didn't. Instead they proceeded to debit my account after saying they wouldn't, then told me I had to wait 5 to 10 for them to refund the money. Who can wait around 10 days for someone to repay you R12890 when your bills are due??? I was forced to reverse the debit order via my bank and I now have an unpaid debit order on my credit status, then they send me an email saying we have resolved the issue, which isn't the case, they did nothing.
Two weeks later, I get two more invoices, which I queried, and then I get a credit for R11700, not sure why. It took them two days to reply saying they made a mistake. I should have just kept their money... Anyway I paid them back the same day they sent me the bank details and really now have to hope that they don't debit me again for anything. I currently have no internet because I canceled in utterly desperation to have them stop billing me ridiculous amounts, that didn't stop them though, even after everything they still just went into my account and took what's mine. This was the worst experience as a customer