Originally Posted by LostSol

The noise is caused by the lightweight singe-mass flywheel. The stock flywheel is a dual-mass dampened flywheel that is designed to keep the obnoxiously loud transmission quieter (aka it doesn't transmit as much gear noise). The noise will never *cause* any damage, its just annoying to some. Assuming you have the proper clutch/pressure plate/flywheel for the car, they wont damage the transmission.

Tell them to fix and replace your trans, put your expensive *** clutch and flywheel back on, and to properly **** off.