Absolute useless at fixing their problem

Ok Vodacom. This is now the 3rd or 4th time to write over same issue. You billed me for my new contract as one huge amount instead of monthly and was made aware of this issue numerous times. My ref 1- ********** ********** . Now you deducted R13400 from my account at once.. the issue that was brough under your attention you haven't sorted out. So now I have no money and debit orders that will bounce due to your lack of service and ******* customer care. I expect this debit order to be reversed and fixed with the right amount to be deducted. You have caused so much damage and stress for me. The amount that I agreed upon for contract signing was R600 odd rand. Now the credit note i attach doesnt even add up to the difference so I see another month of shouting and fighting with you