This guy has been so pushy, but I'm not giving in and serving him past last call
It sounds reasonable to refuse to serve him anymore then, right?
He is so drunk and I'll never serve alcohol to people like him again.
Drunk customers can be hard to deal with. You don't have to serve him after last call. Just tell him that those are the rules of the establishment.
I'd say a customer is always right but this guy was so mean to me.
The rules are not to serve anyone past last call right? He needs to respect that and leave. Being drunk is no excuse for him to treat you poorly.