I think I have been ripped off?

My 1997 Ford Ranger just plain quit running & left me stranded. It had been running great. The mechanic said the timing belt broke, he replaced it, along with the catalitic converter, when I went to pick it up he said it probably won't make it home, because it also needs a fuel pump. We were in shock , how could this much go wrong all at once? We decided to try to get it home, and put the fuel pump on ourselves. The truck is running terrible, & it backfired 3 times on a 6 mile trip. Could this be the fuel pump or did the man not get the timing set right?

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  Silverwingsto