"corporates are setting up at exhibitions and selling properties to vunerable persons without them obtaining or being able to seek professional or financial opinion"
Look, I don't wish to sound unsympathetic but really when people go to these exhibitions what do they expect? And, why sign anything? We're all grown ups and everyone has a choice to go or not to go and to sign or not to sign but to seek a way/solution out of silly behaviour on the basis of being naive or vulnerable is just downright silly.
mf