APPALLING SERVICE

I Bought a second decoder for Xtra-View purposes three weeks ago. called your so called accredited installer installer to assist. He came and installed (It worked for about 2 hours) after which it went back to error E-143 . I called him the next day and he came , i was at work at the time but he came and "fixed" but when i got back it wasn't working . i called him again and he bluntly told me he is busy and refused to tell me when he will come. I have called DSTV multiple times (used an estimated +-R 500 airtime, that excluding the money i paid the installer. you guys keep promising me that someone will call me in the next 24 hours. still nothing. its been more than a week now. i am not willing to spend more money. it hurts that i have been a loyal customer for so many years and this is what i get. Im very close to joining Netflix. i cant be stressing about something i pay for. The so called accredited installer name in Raymond contact numbers: *** & ***. My DSTV account number is ***7.