Unprofessional Dstv Installer/technician

This is a Dstv installer and came to sort out an error that we had. They found the problem and connected the cables by only twisting the cables together and not using the proper connections, now they don't answer my calls or messages. would like to warn people from these unprofessional installers. I can not believe that Dstv would allow these installers to use their name on their website https://technosats.co.za/ They are called Technosats number 081 372 4700 and email: infotechnosats@gmail.com