Telkom debit orders

I have taken a telkom home wifi package about 5 months ago, and I handed over my bank statements and all documents that was required by telkom but since the first month it was a total mess up, they didn't debit my account and when I called the call center I was told the bank details are wrong so I gave them the account details again, and I paid the account by eft, the 2nd month no debit order called the call center again and was told they won't debit now because changes was made to the account I need to pay by aft or I store, the 3rd month same story no debit order, called again this time I had enough I had a call center agent which must of been the most useless customer care consultant that I spoke to in my life, she tells me she doesn't know why they didn't debit I asked to speak to someone in accounts she said they don't have a accounts department, I asked to speak to a supervisor she said he also can't help me, the last 2 months still no debit order yet I called in and checked if everything was fine and if the debit was going to be done I was advised all is fine, then I start getting calls from a debt collection company to say my account was handed over for non payment, I have 5 contracts and telkom is the only company that has problems debiting my account, I'm tired of calling the call center because there's always no managers or someone in a management position that I could speak to, it's absolutely terrible service being a huge company I will never advise anyone to take anything from telkom they are total f#%+! Ups. I don't care how they fix it but it needs to get done or they need to cancel that ******* with no addition cost.