Paying for an extra unknown decoder

On the 1st September 2015 I was told to pay R1900+ for my account that was a surprise but I did. After just over a month my dstv was switched off and when I called to enquire I was told of another decoder that was in my name. I then told the consultant that I only have one decoder, provided him with the smartcard number and my decoder number. I was then informed that I had credit to my account. I was surprised when I found the dstv off just under a week later. I called the call centre again, only to be told the journal that was generated had been rejected. Attempts to get reasons why were futile instead I was made to hold the line but still I did not get any answers. I was not told whose decoder I had been paying for. My dstv is now still off after been told I have credit of R1000+. I wasted a lot of airtime calling these people and I am still in the dark as to what the real problem is. The lack of professionalism from multichoice is appalling.