Twenty First Amendment

I've been coming into this place for over 30 years and have never been treated like I was yesterday
When the female manager was here a while back, she or another worker would always help me out with my purchases which usually included 2-3 cases of beer and 3-4 boxes of wine. Since she left everyone there is so unfriendly.
Yesterday, I stopped by to purchase 2 boxes of wine. Took them to the counter and the worker says "can I see your ID" and I said "you have to be kidding me". I said I'm 67 years old. Another worker who was bent over the counter reading did not look up or acknowledge me, but said very loudly "then prove it". I left devastated at being treated this way. Is this the way 21st amendment wants to project it's business?