Technician and call center blunder

When my single view decoder lost the signal and kept scanning for long periods without connecting, I call DSTV call center. After 20 minutes without a solution I was advised to take my decoder to the nearest contact centre. When I got there(Randburg) my decoder was tested and found to be in working order. I was further advised to have my installation checked. On 5/05/2015 an accredited(listed on the DSTV website) DStV technician(Aerial World) came to my house and told me that there was nothing wrong with the installation. I must take the decoder back to Multichoice and have it swapped. I went back to Randburg and again my decoder worked, but it was swapped anyway, but when I got home same problem. At this point two weeks had lapsed. I Eventually I called another installer (DSTV Time) I found on the internet and on 20/052015 they visited my house. Within 1 minute the technician was able to establish that the problem was the power source. He brought his own adapter and my decoder worked. I later went to DSTV and bought a new power source for R150. <br> I've asked multichoice to compensate me for 1st technician fee and the DSTV swap. Only the R350 was reduced from my debit order.