Rich,
Finally got a reply from PhonePayPlus today. Not the greatest to be fair, but seems they can't do much about it. Reply follows:
Dear Mr Tate-Davies
Reverse-billed SMS service (chargeable text messages) - 61115
Thank you for your complaint received on 17 July 2008.
PhonepayPlus regulate the content and promotion of premium rate services. Our aim is to minimise consumer harm by ensuring that the companies responsible for providing these services abide by the PhonepayPlus Code of Practice.
As a result of your complaint, we would suggest contacting the service provider(s) directly and request that the service is cancelled. They will also be able to tell you how your number was obtained and how you came to receive these messages.
If you have any further information which you feel will assist the investigation please contact our helpline on 0800 500 212, between 8am and 6pm weekdays, quoting your case reference number. This can be found at the top of this letter.
PhonepayPlus does not have the power to force a service provider to refund consumers. You may contact the service provider direct to request a refund at the address provided below; however, if your request is denied, we can only advise that you seek independent legal advice (e.g. Citizens’ Advice Bureau). This is not something that PhonepayPlus can help with and we will not be able to comment on this issue.
If you are receiving regular text messages and wish to stop the service either send a new text with the words STOP ALL to the shortcode (5 digit number, standard text charge will apply), or contact the company responsible for the service who will also be able to give you more information about this service.
Anyway, thought I'd share as you wanted to know how I got on!
Chris.