Oooooh. That would make me SO mad. 
I'd call Starbuck's corporate offices and demand that the PERSON AT THE STORE call you back (through relay of course) and give you a personal apology (and maybe some free coffee or soda 
).
I saw some folks in this thread say "I can sort of understand why a hearing person would do that, maybe they think it's a telemarketer". I'm a hearing person, and I CANNOT. There is absolutely NO EXCUSE for that kind of ignorant stupid behavior. A telemarketer tries to sell you something, and usually starts out by asking you a bunch of questions. When a relay operator says "I'm translating this call for a deaf person, and here's how you converse... say 'go ahead'... say 'end call', and so on...", I think you would have to be an utter idiot to think that it was a telemarketer.
In a fair universe, the moron at that store who said "we don't take relay calls" would lose his hearing for about a month, and learn a little bit of sensitivity and maybe some remorse.
It's eye opening for me to learn about all these subtle examples of discrimination that deafies face every day. What's wrong with people?!
I can see how calling them back might be the fastest way to get through to people like this -- once they realize you're not going away, they're forced to deal with it like mature adults instead of ignorant babies. I'm just amazed that people are that stupid sometimes.
