Appalling service

Very disappointed in Multichoice! I have spoken to 4 consultants within a month, and none of them managed to resolve my issue. This month I was charged R1119 for my dstv account, instead of being charge my normal rate of R425, or rather R459 because its gone up. Apparently, They were billing me for 2 decoders which does'nt make sense as I have been paying my normal rate since November last year, so I don't understand why this second decoder is active all of a sudden??? Anyway... The last consultant I spoke to on the 5th of April at 17:27, said that its an error with Multichoice and that R425 will be credited back into my bank account. She also said that the remaining balance will remain in my dstv as credit available. I still have not recieved my money and I will refuse to call the call centre again to resolve an issue that was doing in the first place