Again wrongly billed

In December the wrong debit was done on my account. Double debit to be exact. I received a sms saying that they are busy rectifying the problem and all cost will be refunded. The two debit orders came back on my account that was reversed from Vodacom which I was charged for almost R200 extra for returned debits. This was NEVER credited from Vodacom. I spoke to the gentleman at Vodacom to tell him they can debit my account end of January with December payment as well as January payment. I confirmed the amounts with him which he agreed to as well. When the debit order went through almost R200 extra was deducted from Vodacom and once again the debit order came back, which I was charged for. Altogether I spend almost R500 in charges that is due to Vodacom's incompetence. The operator has the cheek to tell me my name will not reflect in good standing with Vodacom due to this. THIS IS VODACOM'S FAULT NOT MINE. I have had a Vodacom account for years and never had a problem until now and clearly Vodacom is not interested in seeing their own faults. I want this account sorted out as soon as possible with my refunds.