Unfortunately for you, the moderating isn't always fair as the mods don't have time to check everyone out, and even if they thought you are genuine, they probably won't cut you any slack now you've complained and said their opinion is utter tosh, even if that's true.
It also doesn't change the fact you made a new thread to complain, which would very much be considered spam I'm afraid. It was harsh to ban you for just making one thread like that, but with so much spam and rubbish in that section of the forum it's inevitable some people will get overlooked. Best way to avoid is not to create any new threads that are likely to get jumped on by people with nothing decent to say. It's a shame, 13 years is a long commitment (good on ya), but keyboard warriors won't appreciate that.
Just playing devils advocate here. Anyway, the people who moderate aren't strictly employees of the shop.