Mixtelematics customer service

I bought a car in march 2021. Mixtelematics was asked to insert a tracker in my car. On the day of collecting the car the tracker had not been installed in my car as all the paper work was not completed. I received a sms I the 17th march that I would be contacted regarding my installation. My reference was ***1. The tracker was never installed. On the 22 march 2021 I called my tracker installation was cancelled.vi proceeded to get another company to install it. However end of april a debit order went off on my account. I reversed it called them. Today 25th Msy they send me a note saying I have been handed over for R113 foraging service that has not been provided. The worst is that yesterday I called the vlient services who told me everything had been sorted out and apologised for the problem. What should I do. Yousteuggle getting through on there telephones. Iris Davids