[ben parrish]

Good advice to have things checked immediately...like tomorrow.
Verify that work was done correctly and move on.
If the work was done incorrectly or the bushings are damaged, dispute the charge with your CC.
If all was done correctly, chalk it up to a learning experience and then find a mechanic that is capable of communicating with you.
You current guy may be very good at some things but his responses indicate that he is either covering up some questionable work or simply not customer oriented. Either way, there is no excuse for continuing a relationship with him.

good luck.

Ben