Wtf did i just get grouped with

Ok, game starts off normal until 'enemy team: report syndra afk' syndra isn't afk xD then brand ggoes 2/16, we have a shaco that gets blue while we're waiting at baron ok fine then. We go 4v5 because shaco is still farming, we get wiped. So now shaco solos baron and dies, ok that was a good idea, Diana nearly kills the fed graves, I tp in pick up the kill, then i Xpeke the nexus, ggwp but wtf this is Plat xD I mean, I'm happy I won but my god that was frustrating xD