I don't really get the "get" hate. I would say "could I get" (no idea if it even makes sense just a habit) rather than "can I get" but other than that - "get" is obviously a colloquialism for "acquire" or "obtain", it doesn't mean strictly and exclusively "fetch for myself".
If someone asked you 'where did you get that coffee' would you say 'Sorry I didn't get it I b(r)ought it'?
The coffee was got at some point.