I have deleted my account, deleted then the cookies and tried to login again. gamesas says no profil there... thats correct, but then i click on Forum and gamesas says Hi, Zaid, welcome back! although i couldn't login anymore with this profil ... ups and then i could edit my account again and could delete it when i want. So there seems to be some userdate somewhere else in your database ? When this will also be deleted, it should work.
Maybe take a look on that...