Poor communication service

I've been using tracker for years with no issues but lately their services are so poor, everytime they get a notification on one of my cars they call to check but when i answer the phone the call gets cut off and not on my phone only even on my husband's phone as they also call him and after that they don't call again they are done , meaning if im highjacked they won't even reach a point of realizing that because the call gets cut off. Ive logged a complain but the issue still remains. I wanted to add another car so i requested a call and they called me and same thing happened and they never called again, even with sales they don't care or take efforts so what about the ones we are already paying, they don't even need to beg us. Im tired of their poor service that they failing to resolve id rather join another company for the new car as for the rest ill wait for contracts rp finish because with them you'll be highjacked and receive a call that will serve no purpose .