I won a game but it isn't at my "won list"

The creator of the giveaway probably abuse the golden joystick promos and gave away lots of copies.That's why the mods removed the giveaway.

Look at it this way: let's say the person giving the gift had an offensive Steam avatar - like a big veiny phallus. You want to ban the user as they refuse to change the avatar, but banning them still leaves it visible on people's pages in won gifts. That wouldn't really be completely filtering out offensive and unwanted content, would it? The only solution is to entirely delete their presence on this website, sadly enough, on the cost of other users; a worthy sacrifice to get rid of something a lot of people would rather not have seen.