I’d suggest there is some confusion here.
I believe the OP thinks he has been auto-banned for 7 days for Selling keys in trade chat.
Now, lets look at the evidence.
(Puts on Sherlock holme’s cap and fills pipe with tobacco).
Firstly,
In game suspensions (i.e. NOT chat squelch/silences) are not automatic, they are the result of a Game Master applying a suspension.
Selling keys is not inappropriate language, it’s spam.
Spamming can result in a silence, but rarely ever a in game suspension.
I suspect the Game Master has just reached a ticket/report where the OP has used bad language in the past and the Game Master has now applied an appropriate penalty. The fact the OP happened to be spamming trade at that time is merely coincedence.
OP: You can appeal your suspension via ticket, the forums is not the place and also as you have been advised on the CS forum, the Blizzard forum staff cannot assist, your appeal must be via ticket.
So, it was professor plum, in the library, with the candlestick. It’s elementary my dear forum readers.