Banned by mistake and not any " gift " for mistake ...

So ... I get banned by mistake cause some random guy reports me for some " national offending " done on /w chat ... I'll keep it censured for now - but the main prob is that I got banned for something that even isn't national offending ( from grammar view ). I got 3hrs in-game ban and when it expired I made a ticket - gm told me that I deserve it cause of national offending - after saying him that he makes a mistake and that he should review the case he says - my apology , you are right . We are sorry for all frustrations this problem caused to you. Just a couple of hrs latter I wanted to make a post on forum and what I get is notification that I'm banned 3 days from it.
Next, I make in-game ticket to ask GM why am I banned on forum - he says " I really can't know that. Not any action in-game is connected to forum bans. It must be something that you wrote wrong on forums .... " Then I sent report to " forums@blizz.eu " where I get answer that all connections in game are connected to forums and that it auto triggers ban on forums cause it's " logical " . And they also don't wanna confess that there wasn't any customer rights harmed.
So, my question is - how many GMs I have to contact cause of some " mistake ban " and how many different answers I have to receive before I get to final truth ? And, do I deserve a proper " gift " for mistake Blizz has made and all my frustrations caused ?
no trolls pls.