Poor service from Cartrack company.

I’m a client of Cartrack company. I have a problem with the panic button which is not working in my car its now taking me 8 months reporting the matter to them and they’re still doing nothing about it and they are deducting the full amount every month for something which is not working properly. When I talk to them about changing the package to something better they tell me about three years contract so I can’t change it due to that but still they can’t help me resolve the issue.