Fraudulent installers

In the 6tharch I called DSTV installees in Kibler park to assist with LNB connection & 3 guys came in a polo, the one stayed in the car and two came out,vthey went on the roof and came and told me that I should get a new dish to have single view as I live in a cottage and share a satellite with my neighbour, so they suggested that they would rove the splitter And remove his connection it resolved the issue but my neighbour and they said if I had more issues they will return at no extra cost. To my surprise nothing was actually done and when I call or text them I get more stories. Please assist in shaming Kibler Park Installers (as they call themselves) they are fraudsters and ignore calls when they have to sort out a mess. Please advise if I can even open a case of fraud herein. All I have iavthe guys name & phone number which I made the cash send payment to.