Sorry, guys, but this doesn't offend me. It's rude. It's uncalled for. But, it doesn't offend me. I just finish the round and block the player. Game, set, match.
All kinds of people inhabit this planet from saints to douches. If you get hung up on the douches every time you run into one, you would never make it home from the grocery store. Get some thicker skin and move on. Don't sweat the small stuff.
If it bothers you so much, sure, you can run off to the WGT Sheriff and complain, but how do you even know you did any good? It just seems much ado about nothing.........much like my response.