I need major assistance with my 96 honda civic ex?

My car just came back from a mechanic with multiple things changed. I took it in not starting. I was told but a guy it was fuel pump. After I got it to the mechanic aND first they said it wasn't fuel pump. They then called told me it was done went to pick it up after the timing belt was changed, the o2 sensor was changed. The temp sensor was changed, new spark plugs. And then it didn't start the next day went to pick it up they said it was ready and they changed the distributor cap. I drove it yesterday and it seemed fine went to start it today and it won't start. Got a funny buzzing sound from the main relay. Idk what else could be wrong can somebody help me please

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