Very poor service.

Worst service given by Chris came to my house 8 november 30 min job R1600.00 charged. My dstv gave no signal error. He changed the LNB.Did not even clean where they worked. I called Chris 2 times because the same error is still appearing.Keep on making empty promises. No show up. I feel I paid for no sevice. And he says he is a Dstv accredited installer. I want my money back or I want the service that I already paid for. Please come and fix what I paid for.I will not pay for anything more. I will take the matter further if no response received with dstv