Multichoice refusing to repay incorrect debit

Towards the end of December 2014 I contacted Multichoice to request that my DSTV package be changed from the R396.72 option to the most basic option, costing R29. I was assured that this would be implemented from 17 January 2015. Around 20 January 2015, when I realised that I was still receiving the R396.72 option, I went into my bank account and noticed that my account had been debited with the full amount. I immediately contacted Multichoice and asked for an immediate payback of R367.72. Ms Phatsoane wanted me to pay for the few extra days for which I had still received the larger package, which I refused to do as I had not asked for that service. Eventually she said that a request for the full credit had been registered and that the amount would be in my account within 5 - 7 days. As on today, 9 February 2015, this amount has still not been repaid. I am deeply disappointed in the poor service I am getting from Multichoice. The reference number for my complaint is ***.