Internal staff is a joke.

Pretend to leave, they flatter you as soon as they are afraid of losing their business, and then when you see that they start to like you, say to them: Don't judge a book by its cover in the future. Who cares about this business you are doing? Just do your job, it's not that I don't give you money!

Then pretend to leave. If they don't stop you, leave the store and see what they think!