I got banned on Steam group Group Buys for doing nothing wrong / gib inside

So I have been visiting this Steam Group, Group Buys, every once in a while. In the group people can split their bundles and sell games for shared price to other members. It worked pretty well and it has been the only group I actively followed. When a new bundle got released and I didnt want to buy the whole bundle, I checked the group and tried my luck reserving games which I wanted.

2 days ago, just when the new Humble Bundle was released I checked the group since I wanted to buy only one game which was in the BTA tier and found this message on top of the group's discussions:
"You have been permanently banned from all Group Buys discussions. You have been banned by a forum moderator. Reason: "Multibuy isnt alowed.""

I was like, WTF!? I tried to contact the mods on Steam, one of them accepted my invite and I asked him to show me where I made a multi buy? He couldn't say and started his "investigation". then he said I have been asking for the same game (Spec Ops the Line) in more than one threads (which is common practice in the group, because you don't automatically get what you asked for the in the first time, some people post in the very same second as you do and the groups credo is first come first serve, so you're out if your posts is right after someone elses who requested the same game) and apparently I didnt activate it, which was not true either, so I told him to check my account again (not that there is any group rule that says you have to activate all games/bundles you bought on GB, but whatever dear mod). Then the guy claimed I was using multiple accounts. I was like WTF!? again. He asked me why I use the phone to contact him, I told him that I'm lying in bed and that using the steam app to chat with a steam member isn't a crime, but he interpreted it as an evidence that I must be fishy or something, and said to check back with him the next day, because he needed to ask another mod or something.

well then, the next day I got back to him again with my steam app (since I have guests at home this week, I dont sit on my pc for the whole evening as I usually do) and this guy was like: "ha, got you! - you're on the phone again and at the same time talking with me with your other account". I was once again like WTF!? This was enuff, I tried talking to him in a normal way, asking him to show me where I did go wrong, he couldn't and instead made up something. I basically told this wannabe Sherlock to go to hell (in a rude way) and if this is the way they manage their group, fine, then I will be using a different account to access the group in the future (I have enough ASF bot accounts) and unfriended this idiot.

I tried my luck with another mod right after that but it looks like he will not do anything about it either, since he will not interfere with the other mod's decision. So I'm fucked for nothing now.

I was never using multiple accounts. I was never buying any games twice in that group, I buy for me and not for reselling. they pretend as if I made multiple Indie Gala bundle Happy Hour reservations on several threads for reselling the games. my bundle leftover thread is here http://steamcommunity.com/groups/groupbuys/discussions/10/521643320352058628/ as you can see on page 4 I sold hundreds of games between May and September, because I made so many multi buys (this was irony if you didn't get it). There is actually no real way to tell if someone bought games multiple times UNLESS the seller states who they sold their games to in their first post (just saying!). I cannot prove shit, but they can't do either - and still I'm punished for nothing (and apparently another person is punished too, the person who the mod mistakenly thought to be me (or vise versa) when I talked to the mod yesterday). I can't do nothing about it now - all power to them.

Well life goes on, I will get over it (although I dont understand it, I always try to be fair and have clean rep / no bans etc.) and finish this chapter now, I'm wiser for the next time (not really since I did nothing wrong - I just wrote that last sentence because I needed a word with an x to complete the giveaway puzzle:).

Did you ever get punished for something you seriously did not do (in real life or online)? Share your story here and good luck to all who enter the giveaway.

BUMP WHEN SOLVED!

EDIT 2016-09-24:

I started a steam group just for fun to see what mods/admins can do. They certainly cannot see IPs so they cannot see whether someone uses multiple accounts like that mod said. Thanks for nothing mod. Mods can on the other hand see your post/history and what you deleted. As stated in the discussions here, I used to delete obsolete posts of requests where nothing came out of it rather than editing the posts, and now I see how that might have caused suspicion in my case. I didn't know that one shouldn't delete their posts, there is no such rule! A warning would have been more appropriate here.

I also learned that the group's admins do not really moderate the group anymore and only 2 mods are pretty much in charge of the group. Guess I have been in touch with the one who banned me then, and couldn't show me where I went wrong so he made up multi account accusations. I got this information from a friendly fella who has been in that group for 4 years.

Nevertheless, an admin reduced my ban to 30 days now, which is still too harsh but I can live with that, as I'm still uncertain whether to join that group again, knowing it is moderated buy some power hungry trigger-happy person.

I will leave this thread open for another 48hrs to give peps the chance to enter the giveaway.

Thanks to everyone who supported me in the past two days.