you're kidding me, right?

i received a complaint from a customer this morning. we have a special running at the store for 'buy 3 apples, get the 4th one free'. the customer bought 3 $4 apples and wanted the 4th apple to be a $6 apple. my employee properly explained to him that it was of equal or lesser value for the free apple. this morning, i get a mail from corporate with the guy's complaint. i call him up and he's all upset about our "false advertising". the sign never said that. true, the sign didn't, but the employee did. on principle, i ought to tell him to pull his head out of his ass and quit looking for for free stuff. but, since he might actually come back to the store, i'll give him another goddamn apple.