How to sue a car service who broke my break pad then sell me a new one?

I went to the car service to do the safety inspection and my car past it. But their people told me that my front break was almost ';metal to metal'; and I'd better change the break.

After I changed it, I found that my old parts are in good condition. What is more, one of the pads was broken by a screwdriver, not naturally broken.

I'm living in New York State, how can I sue the car service. Is it costly?How to sue a car service who broke my break pad then sell me a new one?
Helen L, Let me start out by saying I'm not the sharpest tool in the shed when it comes to auto repair. Last month I had an accident with my Pontiac G8 and I wasn't sure how to fix them. I tried to search the Internet for tips, but the procedures were way too complex for my skills. I ended up going to the dealship for my repairs. The dealership tends to charge more than mom and pop repair shops, but they've seen all sorts of situations (auto insurance problems, repair warranty issues, etc) and they seem to always find a way to help me. Maybe you can try calling auto repair shops in New York to see if they can help you. http://www.autorepairshoplocator.com/NewHow to sue a car service who broke my break pad then sell me a new one?
It is very difficult to build a case to sue the car service.

i) you must have enough information to proof your brake is in good condition before taken the car to the shop

ii) you have to proof that they broke your brake and the used brake is came from your car.

You can fill and law sue through the small claim court, but I think your chance to win this is very low. Sorry, they got you on this one, I think...........
have you confronted the service center? a reputable business will explain and answer any question you have. they depend on repeat business, and word of mouth refferrals. if you can't settle it with them, contact you better business association in your area and see if they have other complaints filed against them, and file a complaint your self. but first contact the service center, they will probally tell you that. unfortunatly, it is costly to sue. you will have to prove that they did something wrong. that means taking you vehicle to another mechanic that can testify that the repair was either not needed or done wrong. then there are the legal fees
most people ask to see before the work is done. you agreed to a brake service. when you saw your old pads, you felt they were fine, its too late at that point. you have the right to refuse service or get a second opinion. A screwdriver is sometimes used to push a pad away from the rotor so they can be replaced. you dont have a case in new york. or anywhere else for that matter. they replaced the pads like you agreed to have replaced.
your best bet is to go back to the car service place and speak with the management...talk to them reasonably and don't over react. they should replace the one they broke and install it. and if that doesn't work talk to an attorney about what to do. they should tell you if you have a good case to continue before you waste your money on trying to win something that you're not. good luck