Grandevegas

I signed up to this site after seeing an advert promising no deposit free spins. It let me join but could not see the free spins. Contacted customer support who advised me to email. Received a reply saying to use security to log in & create a new password. Did all that, still no free spins. Contacted live chat to be told can't play if in the UK. Well, I said I was in the UK when I joined the site as I gave my address in the UK & it let me join!!?
So why are they advertising in the UK then?!