Netstar harrasing client after no performance/ Installation

If only Netstar phoned me on a daily basis like they do to recover R378 from me on a cancellation I might have still been paying them. But after promising to install unit in my new car and canceling the old unit, and after me begging them to install new unit and the being told the same lie as previous time that Rudi car broken down. I had enough and installed Tracker unit to enable me to take delivery of my vehicle after 4 days. Keep on harrasing me Netstar. I will report your bad service on all social platforms I can find.