So we have here someone who can always get accepted to strat battles, but still feel the need to be leeching, aka : going afk for 15 all minutes.
And then complains that he can't get on his strat battle. Then, while banned, still apply for another strat battle, get accepted, and thus, solicite admin's clemence to be able to participate in strat battle.
What i'll remember from this all story, is that you don't feel sorry the slightest, for actually leeching and making it harder for your own team. You're just thinking about your own little misfortune.
Being banned for 3days may be harsh indeed.
But the story is : you being banned for a day or less for 15min of leeching. Then asking (we don't know how, or when, or how many times) an admin for unban, and then he banned you for 3days total.
Something unclear seems there, in the "asking for unban". Clearly.
You don't seem to understand that being banned is SUPPOSED to be a punishment, too bad for strat battle, and actually went to bother an admin to get unbanned, and thus get banned for 3days total, well... bad luck.