Just Tires Tracking Order Status

After we picked our Volvo XC90 from the mechanic,my wife drove it for 10 miles and had no crash or any type of incident. Unfortunately we had an alert on the dashboard that indicates something is wrong with front right parking sensor. When I take a look,I have seen that parking sensor is missing and front bumper has deep scratches, assuming happened during the repair process . When I called the mechanic,he said he recorded the repair process on video and said that he has nothing to do with the sensor and I should call my insurance company. When I asked him for the video to confirm that,he didn't cooperate and gave me sketchy answers. He is trying to fool me and not to take responsibility for his mistake.