I too have had my Dell Gift card balance used in a fraud transaction. My gift card was not lost or stolen, but Dell can see it was not used in my account as it always had been before. Dell refuses to do anything about it.
As others have mentioned, it appears Dell's gift card database has been hacked or breached and they are not helping the victims.
Thank you for posting your unauthorized Dell Gift Card purchase on the Dell Community Forum Customer Care Board and bringing your concerns to our attention. Please reply to my email and provide the requested information, including front and back snap shots of the purchased card. I will forward your concerns to the promotional marketing department who is currently looking into this matter.