Extremely poor service at Telkom SA.

I am extremely upset with Telkom SA. I opened up my account about 5 months ago firstly I noticed my debit orders never went off I went and queried why this was happening it turns out that the clerk had captured my account info wrong it was then fixed and I was told that everything will start to off as normal; still there after my debit orders never went off. I spoke to consultants at customer service that told me straight they can't help me, I struggled with consultants that kept me on hold for literally 40 minutes eventually I got a consultant that helped me she said that she is 100% sure she fixed everything and all will go off normally as from the 5th of November. She said I could EFT them the amount that is in arrears which I did on Friday the 11th of October. Tuesday the 15th of October Telkom tried to debit me the full amount that was in arrears plus the following month installment (which was not yet due) the debit order had hopped and my bank penalized me. I phoned the customer care center once again where I struggled to get a consultant to help me I then requested to speak to a manager and she told me her manager was busy she can't help me I then insisted that I want to speak to a manager because she can't help me after being on hold yet again she came back and said another manager advised her to tell me to lodge a query where then there after they will pay me back the money my bank penalized me for she even asked me if I wanted it payed back into my account or whether I wanted it credited to my Telkom account, she told they will pay me back. I then got my case number and was on my merry way. That following Friday the 18th of October Telkom debited ONCE AGAIN! I went and reversed the debit order. The day before yesterday I got my SMS that my case has been resolved I checked and my money was not payed back. I left it until today because maybe there was a delay at the banks. The consultant I spoke to just now told me that the case says they will not be paying me back and that's just how it is. I insisted to speak to a manager again and he put me on hold after 10 minutes he came back and said something about an official and then he said he's going to put me on hold again which I said is fine BUT then he cut the call off. I feel that all of this is not my fault why must I suffer the consequences for this? Now I'm getting a bad credit score and I'm having my signal cut off etc etc, all because of their mistakes! I do not understand why non of the consultants can get me a manager to speak to?