Poor Service and wrong billing

I paid my monthly subscription on 1 December 2015 like I always do every month. On 7 December 2015, my account got suspended. I tried contacting dstv call centre but could not get through then I decided to go to one of dstv agents to get help and they managed to put me through to the dstv call centre. I spoke to a lady called Nokuthula Moloi and she told me that the reason for suspension of my account is that another customer has used my reference number to pay their subscription of which it did not make sense to me as to why my account should be suspended. We agreed that she will re connect my dstv and I will send her proof of payment for my December installment (which I did) and they will sort it out. This morning my service has been suspended again. My issue is that I have paid for a service that I cant use and nobody from dstv seems to be available to sort out my problem. This is a real inconvinience.