Dstv has no signal all the time now.

I am really struggling to watch my television these days. Whenever I try to watch, I am bombarded with a no signal error message. I have had my dstv connection for over a year now and its never given any problems but these days I spend more time looking at the no signal error message than actually watching any tv. The weather has been perfect so I cant say this is due to weather. I need dstv to tell me what is happening because really I pay money to watch tv and not the “no signal” error.