I think your dealing with a lazy employee problem, not a company problem. Safelite is a HUGE company, I would be on the phone working my way up the chain of command, until I found someone that cared or gets tired of hearing me complain. Let them know your not looking for free labor, you just want it done and done by professionals. Stay calm and let them know they referred you to competitors, that should have some reprocussions for those employees.