Never watch ukTV so what they say in the UK is up to them, the spoken word I agree could mean zero, but it's the same in the UK unless it's in writing then use you head and check it out.
A Denuncia to the Lawyers Head office, I think it's in Madrid could certainly get them struck off for an unlawful act.
I was informed 10 yrs ago that there would be a glut of apartments and villas and the prices would drop, which they did, it was an estate agent who told me that, they are not all the same.