Customer service complaint

I’m having a very bad experience with Cartrack. My car had been giving me battery problems since I purchased it and multiple batteries have been replaced in a space of one year. I noticed Cartrack that their device is draining the battery after being advised by a technician and they have not done anything about it despite the fact that my car has been for repairs and is just sitting there waiting for them to attend to the matter. They are quick to install their devices in our cars because they want money but take forever to just have a look if that device is causing any damage? Every consultant say they are waiting for authorization to assess the device even when the complaint is past their said turn around period. All they do is say they will send an email and call back but never do, instead I’m the one who calls to follow up and only to find that nothing has been done from my previous call. They don’t even provide reference numbers to track the calls, I have to re-tell my story to a different person every time only for them to say they will send an email like the previous person did. This time a waste of my time and resources, not to mention my car that has been in for repairs for a while just waiting on them while they send fruitless emails. This is really ridiculous.