DSTV not giving signal for a week

My father has Xtra view with DSTV and for a week now the secondary decoder has not received any signal. Every time we contact the useless call centre the line either gets cut or they say they sending signal however none has been received. I have asked for a call back after about 15 calls being made to the call centre with no resolution and so far nobody has called me back. I pay for a service I expect to receive! I'm sure they will be ignoring this. If anyone at DSTV gives a **** please contact either myself at *** or my father who is the account holder at ***. Hopefully after a week of no dstv we can get help please!!!