Replying to My shop fuckin screwd me over

i asked my shop to mount my invaders center. i asked them and made sure they would like 5 times. and the douche still mounted it forward by in inch or 2. they mounted them a couple weeks ago (like 2 or 3) and i just noticed this. Im sure they would remount for free (they better) but with the butter zones with the invaders...id think remounting them would render the ski usuless. Should i hassle them for somthing free or shit like that??