Tell them if they don't fix it you'll file in small claims for damages. I'm an attorney I'll give you the basics (although I won't represent you in it, I'll lay the landscape for you).
Tell them in no uncertain terms that this is unacceptable first though, and that they need to fix it. Lawsuit is final step.
GROUND CONTROL | STOPTECH | VRSF | COBB AP | STETT | OS GIKEN
2008 E92 335i MT