That's a valid report for the tribunal. It happened to me as well once. There is no excuse to leave when getting into a match unfortunately and it makes people rage. "Caps lock makes people angry in game too" Just be patient and make sure to have enough time to play a full match before you attend to your real life needs or else just play custom matches, or wait until you get back from your chores to play the game. It's a 5 man team, people depend on you in the game. There is no pause ability. It'll avoid you further bans if you time your things correctly.