last week I couldn't get my car to start I had it towed to a national known Auto repair chain they had it for five days couldn't figure it out. so I had a towed to another shop when I called and the mechanic? wanted to know what it was wrong with it and I told him it was losing power intermittedly while driving. He said we can take care of that bring it on in.when I towed.the vehicle into his shop.I had written down all the history for the past 6 months of what I've done what I had done, no opinions whatsoever it just facts he said he didn't need that he said it's losing power right and I said yes and he said we'll figure it out we don't need that.24 hours later I get a call it's your alternator I said okay, go ahead with the repair. I didn't think it was that but I didn't tell him that cuz I was basing everything on fact and I don't know enough about cars to question someone who is professionally trained to do so.after the repair i went picked up my car, seem like the electric part was working better but there was a buzz from I don't know if it's the speaker for the radi.regardless I drove it home, next day I go down to the store about a mile away come out about a half hour later won't start. call a friend for a jump we didn't jump it and we ended up getting it to start without one.the key wouldn't turn for a minute there, which was bizarre but the long and short of it is what do I do about the alternator that I just paid $600 for? based on what I've seen I don't think I needed one? where do I stand? How do I approach it without sounding like I'm telling someone that they don't know how to do their job? Cuz that's not the case I just think they needed a little more information that wasn't gathered.
The problem is, if you don't know much about cars, then your careful logs of what you know isn't much good to the mechanic. It ends up being a travelogue of ramblings and incoherency. Um, much like your question.
Your single best bet when it comes to keeping cars maintained is to have mechanical knowledge. That, plus a set of tools, also gives you a 60-90% discount on most auto repairs :)