They took my car for a joy ride

I approached We Buy Cars to sell my vehicle. Decided to go to a Pod instead of waiting for them to come to me. The person who helped me was Joshua. He told me to wait while he takes my car for a short test drive. A few minutes later he was back. This evening I checked my tracker and saw all of the events from my Discovery app - my car was driven at 141 in a 60 zone, there was severe cornering, braking and acceleration. This is so unprofessional and I need someone to contact me as soon as possible and share how they will be rectifying this and what action will be taken against this employee.