Bad service at DSTV

I have had endless issues with my decoders. I had an explorer and 2 other decoders linked to my account at home. The decoder had a hard drive issue and I had to factory reset it as the hard drive was *******. worked 2 weeks same issues. Got another explorer and drove to Multichoice in Randburg 2-3 weeks ago and had an installer out twice and now the new decoder has a hard drive ******* issue?????? phoned now after holding for 25 min and spoke to Akona but she is not allowed to give me her Surname? then the call got cut off???? why am i paying this amount of money not to be able to watch DSTV Premium and use the PVR facility? what do I do next........ It is costing more for asking and getting people out with now resolution???? please call me i am sure when they cut you off they have your number to phone you back as they ask that every time why do they just ignore that fact.......