unfair billing and viewing

Today Dstv phoned us after our Dstv service has been off for the past 4 months just to tell us we owe them R262, our last 2 months of viewing we had countless problems we calledcalled in so many times I lost count, we had about 5 TV program working and none of it was of use to us, they told us to take the decoder to multi choice cause there was problems with it but that wasn't the case, our Dstv stopped working properly after there was a storm and heavy winds. We not paying a single cent until we get our 2 months money back.