I'd be back in the shop Friday morning and ask, very politely, for them to fix the defective bicycle they sold me for six grand and that I haven't been able to ride for two months. They'll say the bike is off warranty and it's not their problem. I'd go to Trek again, same deal, politely. If you still get no response (which I don't believe will be the case), I'd file complaints with the Better Business Bureau and with your local Chamber of Commerce, if they have a process for that. Your local newspaper, if it hasn't died yet, may have a consumer hotline or something similar, with an ombudsman or some other representative who handles stuff like that. If so, contact them, too.