Customer service

I have got to say after having 30 years subscriptions the quality of service of this organisation has gone rock bottom. I have the DSTV premium package and after spending an hour on the phone I`m bon the wiser. I have trhree channels with no sound and not a soul has a logical explanation for this. I have rebooted the decoder umpteen times and attempted reseting the audio all with no result. It has even been suggested I replace the decoder , come on this defies all logic. It`s bad enough having repeats after repeats. Surely we can expect better. This is not qan isolated complaint. DSTV is on the road to nowhere and all my friends and associates ageee.