Im angry to say the least, i actually didnt sell gold on this. The only 2 transactions i did was 48k from my friend who lives 5 mins away and a friend took 40k from my banking guild. Thats all thats happend on this account and blizzard have banned me with the same excuse, you are selling gold *swings ban hammer*
Um... then maybe you should contact Blizz and ask WTF (in a semi-ticked mood) - something that basically asks why they would ban your accounts with what you just described above... and see what happens. You'll probably get them back from what I've seen here.
But nowhere near as satisfying... lol... j/k of course... would never advocate actual violence in response to a game.