This user obviously just promotes whatever company they work for:
Looking through their posts (including the deleted one), this user doesn't seem to be self-promoting beyond including a sig in her answers. Considering that she posted all her answers within two hours of each other and the edits to remove her sig were (for the most part) made towards the end of her posting, I'd give her another shot before taking excessive action. To quote some famous dead person,
Never attribute to malice that which is adequately explained by stupidity.
In this case, we'd substitute "unfamiliar with the social norms in our community" for "stupidity", but the concept still applies.
If this behavior continues please flag the relevant posts and we'll take further action.