The warning isn’t necessarily for language, but that the behavior is being reported by your fellow players. That tends to mean that what you are doing isn’t being well received and likely being reported for spam.
It is unlikely you will get “banned”, but it is possible that you might be squelched, temporarily silenced, which you can appeal to have looked at.
Just to put this out there, the majority of players don’t purchase WoW Tokens for gold, nor do they sell carries, they just play the game. Acquiring the ingredients through their adventures, or by working with their guild/friends.
Good luck.