Getting banned because of afking in bots game when I have bot teammates....

I know riot has been trying to deal with this massive number of bot players in bot games, but banning me because I don't want to play with bots is just sad. It was only 1 afk in 1 bot game but due to my previous leaver penalty (3 days ban) I get one week ban? Please riot I think leaver buster system needs to be fixed.