Need advice on how to handle a rebate/fix issue at the dealership

For those of us who work as service advisors/service writers. Trade stories, commiserate, or give advice.

Looking for advice, service department related.

A place to ask professionals in various aspects of the industry your questions. Top level replies are from accounts that have been vetted and flaired. If you have not decided what car you wish to buy, please use /r/whatcarshouldibuy.