Vodacom Bad Service

I have phoned Vodacom regarding a penalty fee they have charged me for a debit order that bounced. Funny enough they have Standard Bank account details on their system, but I have an FNB account and when you open a contract they want 3 months bank statements, but still they got it wrong!!!! I have phoned them several times to do a reversal and after a month they finally started looking into it only now when it is month end just before my debit order needs to go off. I am not happy with their service at all. They tell you they will get back to you once you give feedback on Hello Peter, but they never do. Not even the head office cares about good customer service.