Extremely bad service and bridge of contact

I had a Pricelock contact of 24 months with two exta-view which ended 3 months back. I got a call from Multichoice asking if I wanted to renew my contract, which I agreed to take another 24 months contact with the same package..(Compact with 2 extaviews) for R639.00.. Within a week of signing up..a new Explorer 3B was delivered and was installed.. Then that's where the problem started..my extraviews weren't playing and I have been charged more than what was agreed on..the first I paid R700.00 instead of R639. Knowing that there will be some balance on my account. Bur then after 3 days my decoder was disconnected and their reason was that I owed R900+ ..I immediately paid the amount requested and still no extraview. And again this month I was billed R1300+ ,and my services were disconnected, when I called the call center wanting to know why..? I didn't get a straight answer,then it was reduced to R969.00 which I still don't understand why. So I paid that R969.00 then it was reconnected without extraviews..and worse my package comes with PVR(where I get to record, catchup and rewind)..after reconnection PVR is not functional, I called them again to get it fixed they promised to reconnect it in 3 minutes and would call me to check if it's working but didn't call until after 7 hours without a call..I then called them again and promised it will be ok in no time..it's now over 16 hours and nothing has changed. I've been over changed no extraviews and no PVR. They only gave me this Reference number-***/i213 Please help..