St. Louis/Denver

I always get the douchebag cabbies.

First, I'm taking a taxi to O'Hare (flying to St. Louis) and have this asinine exchange:

Cabbie: I got here 15 minutes ago!
Me: Wait, I told them to have you come at 5 am...I think it's 5 right now, right? [check cell phone]
Cabbie: I've been sitting here for 15 minutes man, where were you?
Me: I'm sorry man, I asked for a cab at 5. I didn't know you were here. But thanks for getting here early.
Cabbie: It's 5 now!
Me: It's not my fault you got here that early.

Then he gets on the phone and bitches about me to someone in a foreign language. But hey, douchenozzle, guess what? Next time you call a minority a 'spoiled bastard' in your native tongue, check to see if maybe he looks like he might understand what you're saying. And then don't moan about not getting a tip. Ass.

And then in Denver, this:

Me: So it's $50? Can I get $5 back? [Hand over three $20 bills]
Cabbie: Here's three.
Me: I need $5 back.
Cabbie: Here's three.
Me: What?
Cabbie: Here's three dollars.
Me: ...

I didn't care because it's not like I'm paying for it, but what the eff. Are there different rules in Colorado? Is it worth being an ass for $2?

Nothing else of note happened on either of these trips. St. Louis is still the worst place in the world. Denver's kinda pretty!