No signal x 3

I think these people should change the “excellence” part of their name. I have a technician come and sort out the problem i was having. The very next day i noticed had no signal on a number of channels. I got them to send someone again unfortunately they same person didn’t arrive so the poor technician had to fix the problem. And again that evening same thing happened no signal on some of the stations. I paid over R1000k the first time and now to scared to get them back in case i need to pay another 1000.00