Greasy Wrench Garage review: I still have leak and the repair man doesn't know what to do 1

I left my car in Greasy Wrench Garage for the repair. After the repair man said the estimate fee for the services and parts. I also asked him to check if the car has any leaks. He added the estimate fee for the leak check. When I got the car back, I found out that it continued to leak. The repair man insisted that he has checked it and replaced the chain cover, so he has no idea what was wrong. He refused to do anything else.