DSTV EXPLORA NO RESPONCE BAD SERVICE

I app**** for the DSTV Explora on the 4 July 2015 and on 6 July it was approved. I asked the call centre operator if there was any fees that I needed to pay as the was on the payment plan option and was told no fees where due until the new decoder was received and installed, then they would cut off the old decoder and activate the new one. After waiting for 3 weeks for delivery and calling DSTV, I was told that On the Dot (Courier Company would phone me for delivery. Phoning on the Dot they had no record of any instruction to deliver the decoder. Phoning DSTV again, i was told that they needed to take a debit order for the decoder pro-rata. This is totally opposite of what I was told when I app**** but their excuses was it is because of the system upgrade. I agreed and the debit order was suppose to go off on the 24th. I have been calling everyday as it is now the 31st and I have never had to plead and beg for someone to take my money. Calling the supervisor Shafiek yesterday, I was promised that he would call me back before the end of the day. Still no debit order has gone off and no phone call. What should I do to resolve. Cannot pay as they want a debit order to activate.