A) You were actually warned prior to the map that you were banned on.
B) You had received a 12-hour ban three days before this with a much more explicit warning.
C) Your ban history is full of other bans for leeching.
D) This situation involved you running off to a peripheral area on the map and running behind a building to hide.
E) Leeching is a method; it is the means, not necessarily the goal, that is the problem. Whether or not you're earning anything from it doesn't matter to your team.
I have seen you fight before. However, more often than not you seem to be on the edges of a map milling about waiting for other people to come to you (hence Find_Me, I suppose). Well, on the whole there's not a problem with that. It becomes a problem, however, is when you wind up doing nothing for your team, or elongate rounds, making an entire server full of dead people spectate you and wait to play on your behalf.
The bans have spoken towards your unwillingness to continue being a contributive member of your team. If you keep playing in this manner, your bans for it will keep increasing in length.
Your current ban ends on the 17th around late morning in Europe.