Competetive gaming is always more or less flawed, it's because of many reasons. It just consumes you and sometimes make you dislike the mod. It feels good to be good, but for me it feels best when I roleplay and look good in my armour. One has to learn how not to give a fuck. It's a super-useful lifeskill that gives +23 to life enjoyment.
I say don't leave, ask for your things back and learn to enjoy the game. Best wishes and have some mercy upon your next tournament enemies.