I agree with eveyone else, if they can't get a simple timing belt job done correctly, I'd be afraid of any thing else they did.
BTW I replace my timing belt in my driveway.
These are interference fit engines, I think one tooth off is not good.
174,000+ miles, 5/20/12 new ej257 short block, 8/20/11 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. Also CHECK YOUR OIL, these cars use it.