Seacoast Mazda

In April I went through Seacoast Mazda to lease a new vehicle. This is my third Mazda, but my first transaction with Seacoast. At first, I had a wonderful experience with my sales associate and was very happy with the process. Upon driving the new vehicle, I noticed a problem with the way my vehicle was accelerating. I called the dealership and spoke with a new salesperson who agreed that the problem seemed dangerous and that I could come in to go over my options. I was offered a new lease, but financially it did not make sense, so I ended up putting my car in service. This is essentially where everything went downhill. I was treated extremely unfairly by the service department, who were rude and negligent toward me from the start. I received a loaner car that was absolutely filthy (trash, dirt, etc.). After about a week of my car being in service, they called to tell me that they discovered the issue: it was a sensor issue, and everything would be covered under warranty and not to worry. A week later, I get a call, which I was expecting was going to be them letting me know my car was done and to pick it up. However, now they have a completely different story, saying that there was damage to the car and that I have to pay out of pocket. They have completely changed their story and furthermore are acting extremely unprofessionally toward me. They have disclosed multiple times that they are understaffed, and to me it seems like they are taking that out on their customers. As I have mentioned, I am a long-term and loyal Mazda owner and have always had a great experience with the dealerships up until this point.