Lost promotion game due to client not responding. Riot fix your bug!

How long did this bug stayed? 5 years!? I lost 2 promotions today after i accepted the match and the client wasn't responding so it stayed there. But it banned me 30 mins. People had this problem since 2013 and how is this still not fixed?! Riot TY for making me lose 2 promotions, you suck at fixing bugs just like how your ban system works. Riot you are probotly worse than EA.
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