Mobile app not working

I have been with cartrack for 6 months now and been paying very good as well. The package I have with cartrack has a mobile app. The app has not been working well as it gives me incorrect location of the car. The next thing the app is no longer working when I try to login I cannot get access. Then I call cartrack several times all their call centers told me they will send me new login details within 30 minutes of our call. Till today the app is not working, whenever I try to contact them they tell me about 30 minutes I have to wait but I then wait forever.