Not turning over...one day after paying $560.00... Still not turning over.

What is your question?

I have a '98 Ford Explorer XL with 142,500 miles on it. It has been 100% dependable until the fuel pump had to be replaced. Not too long after that it just wouldn't turn over. It wasn't the battery so I called my tow assist and off it went to the repair shop. Same guy who did the fuel pump. So he replaced ignition coil, crank sensor and gave it a tune up. All this costs $550.00... And off I went. The next day it was doing the same thing. I was not a happy camper. It needs to be fixed. Do I trust this mechanic? I'm a woman. I have trust issues. What would you do? Love to all, Stranded