Bad service from Aerial connect.

Had a very bad experience with this company. The technicians took 4 hrs to attend to my dstv issue. They claim they replaced a LNB and added a surge protector and charged me R6950 for this. When I checked the installation I found they never exchanged the LNB but only realigned the antenna and LNB. When I reported it to the owner he claimed that he just give the team leads and did not take responsibility although the invoice had his company logo and info on.