When I bought my car from this car dealer I had to...

When I bought my car from this car dealer I had to bring it back to have a tracking devise put on it took them exactlyb20 minutes to do so , however the devise quit working so I made an appointment to have it removed I figured it only took 20 minutes to put it in so 20 to take it out so far I have been waiting 3 hours for them to finish my car the service tech mark is very unfriendly every time I ask about the car he puts me off like I don't matter . I explained to him that I have a doctor's appointment in half an hour he said he would get to me when he has time . I will never do business here again