Technician damaged the underside of my vehicle. I was standing in the waiting area where there is a clear glass window opening to the service bays. I heard a repeating “thunk” sound that caught my attention. When I looked over, I saw that it was the technician slamming the jack into the underside of my car. It was clear that the jack at the lowest setting was too high to roll nicely under my vehicle. Once the jack’s round 3-4 inch surface was forced under the vehicle’s jack pad by about ½ inch. He proceed to lift the vehicle. This did not go well. It raised about 1 or two inches before slipping off the jack pad. This is where the undercarriage trim area landed directly onto the jack with the weight of the vehicle. I walked around to the maintenance bay, swung open the door and asked the technician what exactly he was doing. His response was “You’re car is low”. I then asked why if he saw the car was low he didn’t ask a co-worker for help lifting the body so the jack could roll underneath. He then stated that he was going to go do that now. I proceeded back to the waiting room where I told the desk attendant that the technician is not properly using the jack. He didn’t seem concerned or have any type of response. I was issued an inspection sticker with the appropriate documentation. I paid the amount due, retrieved my keys and back to the parking lot to retrieve my vehicle. I found a large chunk of the vehicle’s jack pad to have been crushed off, along with a 1 inch dent in the undercarriage trim. This could have been completely avoided if the tech had spent an extra minute to ask for assistance in the first place. In summary, I feel as the employees at this location have no respect or concern for their customers’ property. The damage caused to my vehicle was not accidental, it was caused by carelessness. With that being said, I cannot trust any work to be performed properly. Therefore I cannot recommend this business to anyone.