No communication from Multichoice (E-16)

I am extremely disappointed and frustrated with Multichoice's lack of customer service. On the 28th October I received a bank message informing me of a Multichoice debit order. Firstly I have been paying for my subscription in cash for the last two years and I never authorized Multichoice to debit my bank account. When I contacted the Call Centre on the 29th October to enquire about the debit order the consultant advised me that my residential account has been duplicated and their system has therefore billed me incorrectly. After emailing a copy of my bank statement directly to the consultant nothing happen. Thereafter I followed up again 3 days later and was told to email enquiries@ Multichoice. Up to now no response from Multichoice, I only receive their JUNK newsletters. I have wasted more than 4 hours of my life trying to get through to the call centre and sent 6 emails. Thank you very much for nothing. I am glad to say I have sold my HD PVR and Drifta (poor bloke) so JUST CLOSE my account already!!!