Discovery Insure poor service

About a year ago I switched from Santam to Discovery insurance. I was told that trackers will be installed in my car, but due to the fact that only one of my vehicles was close to a fitment centre they would send me a sensor for the other two vehicles that will be attached to the windshield and then work with my phone's bluetooth. After a week or to I contacted them again to request when the censors will arrive. A few days later one sensor was delivered to my house. I installed it but could not get it activated on my cell phone. I contacted them via the app on my phone and informed them about this as well as that I have received only one censor. I had no response from them. Then one day as I was driving on the R45 Discovery phoned me about my Hyundai that broke down and the panic button was activated. i informed them that I do not own a Hyundai. This happened 2 or 3 time at roughly the same spot on the R45 in the following weeks. I then saw on my app that apparently I lost some point to do speeding or bad driving in Prieska. I have never been to Prieska in my life. If I look at my app today my one car is parked in Prieska for 223 days and the other (the one that I never received a sensor for) in Makhanda for 93 days. I have repeatedly used the app and asked to be contacted, every time it says I will be contacted within 72 hours. I have never been contacted. Since they do not have a landline number, but only a 086 number I will not phone them since that will cost me money for the call. Very poor service. I have to add that the one claim I had for a broken window was dealt with well, but I had to phone them.