1998 Honda Civic timing belt repair issue

Engine Mechanical problem
1998 Honda Civic 105000 miles

I recently had my timing belt changed on my honda civic. They also replaced the H20 pump, tensioner, cam seal, and crank seal on June 6th. The day I picked up the car it was making a horrible noise when I would apply the gas. I had to take it back that same day and the mechanic said he forgot to reset the timing. It ran better however in 4th and 5th gear I still heard the same noise when applying the gas. Now (end of July) my check engine light has come on. I took it into the shop and complained that the car hasn't run well since they replaced the timing belt. They diagnosed the problem as a crank speed sensor and they replaced it for free. Friday night while driving it the check engine light came on again. Today (Monday) the shop says it is a camshaft timing sensor and that I may need a new distributer. Is it feasible that these current issues are a direct result of the new timing belt not being right? I am not replacing the distributor until a different shop looks at it. I would like to know if the "sensor" issues could be due to the mechanic improperly installing and/or setting the timing belt.