I came here with a Groupon coupon for $150 worth o...

I came here with a Groupon coupon for $150 worth of work for $79. What a deal I thought. Made an appointment, came in and I've been waiting for 3 hours only to be told that they wont work on my car because I wont get a repair done through them that costs and additional $250 on top of the $115 they added for an extra part they say I need. Had them put the car back together and have to go somewhere else.