I don't know what to do anymore....

In December last year, I took out the Price Lock package and that is where my problems started. The lady who took down my details captured my name, telephone number, delivery address(my decoder got to me 2 weeks later) and banking details incorrectly. A few months later I noticed that my debit order was not coming off and I called in to enquire. I'm still not sure why I was not contacted... anyways, that's when I corrected my account details and made arrangements that the outstanding amount be divided up over 6 months over and above my monthly subscription. Simple, right? Not for the accounts dept. at Multichoice. Once they had my new banking details, they started debiting me for the full amount outstanding. A few thousand Rand that I stated I could not afford. I had no choice but to reverse and call again and try to sort out. This has gone on for 5 months now and My DSTV is disconnected. I've had enough. The fault lies with Multichoice for not capturing my banking details correctly, not contacting me and refusing to make arrangements that would suit my affordability. Worst of all, I missed Game of Thrones last night. This is not right. I need this sorted out today!