Disconnected after call center phoned to renew "pricelock"

Yesterday at around 13h10 I received a call from DSTV offering me to renew my price lock contract as it had run out, and I was on a month to month basis. This girl talked like I was a new customer, but I reminded her that I had been with DSTV for over 25 years on a debit order payment (monthly). I have NEVER missed a payment since I joined DSTV. Nevertheless, this lady confirmed all my details and gave me the pricelock price for the next 2 years, to which I agreed. Later that afternoon when I was settling down to watch the afternoon sport, I see that my decoder shows an error code, and my account has been suspended!!!!. I phoned the call centre, and was advised that this was a mistake by the lady who had offered me the pricelock contract, and she could not re-activate my decoder/s. I was told that it could take between 3 hours and 24 hours to reactivate, which I found ludicrous..... I have been waiting over 24 hours and STILL HAVE NOT BEEN REACTIVATED . This is just absolute nonsense, and the call centre does nothing about it!!!!! How do I get this resolved??????