ClearScore sells your info to nefarious players

I have had my current mobile number for a number of years and have never been hassles to any sort of degree with spam communication (text messages). Since signing up for this service (and not withstanding my good credit score) I have suddenly been the lucky recipient of multiple spam debt consolidation and councilling services via text messages per week, so my question is who do they share my info with and how do I unsubscribe to this ****e. No help from their site and no response to site queries to date