I purchased a used vehicle from this Mazda dealers...

I purchased a used vehicle from this Mazda dealership. When purchasing as a selling point they said lifetime free oil changes as long as you have the vehicle. Well, they discontinued that. When letting me the new policy the service department workers we polite until I closed the door and heard them bad mouthing me because of a previous incident when they stripped my oil pan bolt on the previous service and denied it. I didn't work on my vehicle so I don't understand how it was my fault. It seemed to inconvenience them because of a mistake they made. So I had to pay 300 dollars for an oil change that day. They were talking behind the customers back as if I couldn't hear them behind a glass window. Horrible service, horrible accountability, horrible customer service and I wouldn't think about buying a vehicle here. I haven't given any company a bad review or a review at all until clear lake Mazda. Like I said before I didn't work on my vehicle so being a little upset about a mistake on a simple oil change would get anyone upset. It wasn't my fault that my vehicle was messed up and it's not like I wanted it to be messed up. Completely rude service department and quite frankly don't know what they are doing. Save yourself a headache and do not go here because they will lie about services you don't need to make a quick buck.