Had a guy the other day email me to say he wanted to cancel his service. 6 minutes later, he emails me again screaming at me, "Why can't I cancel my service!?!?" Then 3 minutes after that, he emails me again asking if my company is a scam.
Instead of exercising some patience, some people apparently feel the need to shout and scream like a maniac just so they can be sure they're heard.