the money was withdrawn from my account but a purchase was never registered with Stardock, i did not receive any serial numbers and i can not download the addon, i sent mail to sales@stardock.com a week ago but nobody has replied
Are you sure your ISP is not treating our mail as spam and junking it before it gets to you (some do)?
Also, if you've purchased via paypal, the game will be linked to your paypal email address rather than the email you use here, if they're different. You will need to contact support@stardock.com and request they merge the two emails in that case.