Incompetence at a new level

The Latest service beings a new definition to incompetence. I Signed up for the DSTV Price lock on their Black Friday special again this year, The Process was completely different to the previous years, they now booked the installation on my behalf for the 14th December @9am, was a long wait but I took it as it was the first available date. The 14th came, no call nothing, by midday we contacted the call centre to be pushed from pillar to post, later that day someone called us back to tell us we must call a installer with our installation voucher we received with our decoder. Um Excuse me, What decoder and what voucher we were told the installer would bring that along on the install day. never the less the consultant apologised and said it would be booked for the next day. to our disgust we received a sms at 4am the next morning advising us of the new install date being the 21st Dec at 9am. further I proceeded to log into the installation details and they have the install booked for the 21st at my old Address in Gauteng, I don't know where the wires got crossed but in the telephonic contract my CPT address was clearly confirmed and is on every statement from them. After a hour on the phone with the call centre I was informed that the manager would contact me by close of business to resolve, the manager did contact me with a promise to call back in 20mins, its now been 24hours and still no feedback and still no installation advise. the worst is now I'm paying a inflated fee this month for my subscription because of their incompetence. Someone please help