WORST EXPERIENCE AND SERVICE!!!!!

I have experienced horrible service from Car track. My battery in my vehicle was drained, so I took my vehicle to BMW as I thought this was an issue with the vehicle and while it is still under maintainace BMW would sort it out. To only discover that the battery issue was due to the tracking unit fitted into my vehicle. However, the problem comes in where BMW discovered that there were 2 tracking units in the vehicle and this was the reason the battery was giving issues. So rightfully I called cartrack to inform them of the situation as BMW advised that they cannot cover this under the maintainace plan as this was incompetency from car track. discussed this issue with them and they investigated the issue. But the issue comes in where they are taking weeks to sort this out and I am sitting without a vehicle. The service I am getting regarding this issue is atrocious to say the least. I have to continuously follow up, no one is giving me answers as to when they are going to sort this out. It is frustrating me to another level as this was their incompetency that is caused this issue, and I am the one bearing the brunt. There is also no urgency, and management is unable to give me a date as to when they will have this sorted out. I am extremely infuriated with their service and lack of ability to assist,. I will definitely not deal with Car track going forward nor will i refer anyone to them based on my experience