To summarise someone's experience which has been passed on to me:
Chap sees a website advertising a mobile phone subscription service... text xxxxx to yyyyy at cost of £1.50 and get "exclusive material", with further material coming out every week at further cost of £1.50 per week, text STOP to stop it.
He subscribes, is charged the initial £1.50 and in return receives a link to get the material. The link is named for the material he seeks.
The link takes him to a website on which there is no trace of the material he was expecting. Also, to explore the website sufficiently to determine this costs him more than £1.50 in data charges.
Is it possible for either the operator of the website, or the owner of it, to face any form of sanction over this? (No, he's not about to take someone to court for £1.50 - the question is theoretical.)