If I were you I'd confront them about the prices they are quoting you and the tie rod they want to replace after you replaced it and see what they have to say for themselves. They'll probably be full of excuses, but it might make them think twice before they rip off the next customer.
In S.A. I had a mechanic who worked from home. He used to work as mechanic for the S.A. Police. Great guy, good, fast worker, honest. Unlike the rest of the town's mechanics who screwed me over one by one. One lot even emptied my car's gas tank while they had my car in for a small maintenance job!
In previous jobs I worked as receptionist at a country club and waitress in a restaurant. I remember offering to hold fussing babies for customers when they checked in at the former and dining at the latter, so they could eat their meal in peace. I enjoyed getting to cuddle the little ones and helping the parents and they in turn greatly appreciated the help!
