HELP UHC BANNED ME FOR FAKE REASON :(

I was playing and trading in tf2 every day from I got the game till the day I got banned..
I was trading a rich admin of a tf2 trading server, he was younger than me, And I was 13/14 and he spoke on the mic and told me that one wanted to buy my earbuds for 15 ref.. Max in a trade was 8 at the time, so he told me that he would give me 8 at first, I accepted the trade, then he said I had to leave because the in-game trade wouldn't work, I left the server and then he said to me over the chat that I could keep it and called me a scammer, as it was a nickname.. I said thanks and then he called me a moron and deleted me, I added him and asked him why he said that, then he deleted me and added me again to add more insults, so I blocked him..
Then I got a ban on my login screen and had to contact support.. They said that they couldn't do anything since I had no proof..

But this ruins a big deal for me in Steam, I can't login on any sites to place what I got to sell, I can't place a unban application because it was UHC that banned me and they closed down (extremely unfair) since it is a VALVE STEAM Reputation, any old unlucky steam users can't get help because UHC was extremely unfair when it came to bans..
and I am a trusted trader and seller by many traders, many on the trade sites aswell untill I suddenly got banned and couldn't see it/reputation broken again.. and It's hard to find anyone by myself to trade me, unless they find me first..

I hope at one point that us banned from UHC get a better chance to clean their "Rep Status" in not a to far away future.
Sincerely: Sindre Andre Berglund
Steam: Spiucrus
Age: 18
Country: Norway

I would also like to state that I did not know what scammer ment during this post.. It is extremely bad luck with the words of choise, I thought at the time that it was an warning for "Bad/Not Good" also referring to that I did not know what scamming ment..
http://forums.steamrep.com/threads/could-i-get-scammer-tag-removed.8124/

UHC tags are not appealed here. Go to the Mann Co. Trading forums and appeal there as MCT is the community that now controls all UHC tags.

Link to the site: http://www.manncotrading.com

Link to the MCT appeals forum: http://manncotrading.com/index.php?board=12.0