Ah, I can sooooo relate here.
Every vehicle I've had is a piece of junk, but I loved them and cherished them and fixed them up (womanly soundin there). At first my husband was "well wait till I get a day off and I'll take it up to the mechanics so the don't give you the run around". Well, he's a procrastinator and when my car needs a fix, I mean it needs a fix. So I ignore him and tell myself I will not let these men ******** me, over charge me, or scam me in anyway...I can do this. So I put my mean face on and research the problems with the car before going into the shop, so when I explain the problem I at least sound as though I know what I'm talking about. Usually the outcome is good when you go in there saying "I need a water pump and my radiator flushed while your at it"... women aren't expected to know diddly about there own vehicles, but I try to know as much as I can.
So far I've never been scammed or ripped off, but I have been over charged, (in a way it's being ripped off) when I went to a certain mechanic shop in town. I was charged $50 for the mechanic to put a bungee cord around my battery and mount it (ghetto way). He claimed that would stop my stalling problems but it never did, it was actually a sensor.
Just be careful and like I said put your mean face on, try to understand the problem, research and be acknowledged of your problem and you should be okay.