breach of contract as well as disgusting service.

A credit was issued to me and was not passed. My bank account bounced as a result of being debited by more than it was agreed upon .I made a card payment at a vodacom store and My payment was allocated to the wrong months invoice. I have spent about three hours on my phone to rectify the issue and not even their accounts department can help. I get sent to different departments every time I call. I followed the process they set out and yet vodacom can't even follow through with a verbal agreement that was made on the 22nd January. Vodacom has been very quick to threaten to cut my phone off but when the shoe is on the other foot then it becomes a situation of 'I don't know , I am sorry Mr cooper but please call...'. I have been a loyal client for 13years and I must deal with people who cannot understand what has happened with my account. There website states that thier 'highly knowledgeable consultants will provide helpful solutions' , sadly this is not the case. I informed vodacom of all the issues and Consequence's if they didn't follow through. Yet I am stuck with looking like the bad customer. What more must the consumer do?? I hope this reaches vodacom.