I got banned again

this is not funny anymore, first time when i got ban, there guys start flame on me first(3premades), but ok, i let it past, this time same again, and same again there was 3 premades, 1 start shout on me, and all the rest gave me report for that? wtf is wrong with this system? check the guys who report me, and check demo where we played, and you will see that they start argue with me, not me!!!
ban for unsportmanlike conduct.