still no improvement on service

I have been trying very hard to be nice. But this is the last straw. Not only does Cell C change a debit order date without notice or concent from my side, but when you try and find out about bank charges due to a return on a debit order, you find out that your contract is R200 more than agreed on when I did my upgrade. Now the consultant tries to convince me I am at fault as I did not ask. I am a manager in retail, and you as the staff member should give the customer all the correct information, doesn't matter if the customer asks or knows. So now my question is, what is Cell C going to do about this and to gain my trust in them. Because it seems Cell C only wants money, but does not care about the trust relationship with their customers. I am truely disappointed and disgusted with their service. If i knew i would get this kind of service I would have never upgraded my contract and would have gone to MTN.