I hate going into a garage and being ignorred. I've gone in with male aquaintances and the service writer turns to him to discuss my vehicle. In most cases I am more knowledgable than my aquaintance. It really ticks me off. Then they phone me back to tell me they did a diagnostic and found out exactly what I told them was wrong and I get into an argument because I won't pay for that diagnostic. I also find them often trying to pass things over on me assuming I know nothing and will pay for whatever they tell me they did.

I have now gotten into the habit of demanding to see the work order for my approval before the vehicle goes into the shop.

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the last time I took the car in they tried to tell me I needed new tires. They kept insisting. Once I demanded to know the remaining tread depth in 32s they realized I knew what I was talking about and backed off.