Saw your twitter posts.54,000 Euros !
If you've really got proof,you could always start replying to William Hill posts on twitter -people would see that.William Hill might sue you then,or try to get your twitter account frozen/blocked.
Admitting that you borrowed money to place bets is likely to arouse suspicion,particularly with the sums involved.Certainly newsworthy,though !
What do they say is wrong ?