I would say that this is not normal practice. That person that told you that is why Dealerships get a bad Reputation. If i had to guess The person that waited on you was one of a few things. Inexperienced, over worked, underpaid, had a bad day, or just did not care. I would go back speak with the parts manager explain what happened and things will more than likely go your way. Do not yell and demand anything, you may get what you want but will get a bad reputation with that dealership if you ever need anything else there.