Hard earned Promotional series lost to an AFK.

I've been working my ass off for 2 weeks for plat 1 putting in hours of effort each day trying to get to that rank for the first time.

I've had alot of bumpy failed promo's but I finally got a good 1 and was going to win it till our top laner decided to afk and never return on my tie breaker game.

Of course someone might argue that we could've lost even with him but the fact was that we were actually winning even with 4v5 but that can only work so long till they out scale or get objective control with numbers.

I understand that adding in a working system to prevent this is hard with how the game is designed, but It's still unfair that even though I'm putting in so much effort, stress, and time into the game but these sort of situations still pop up and drag me down.