Fraudwatch: Regulator says I have to give more money to the thieving bastards!

Just off the phone to PhonepayPlus (the regulator in charge of premium rate services).  I was advised to send the 'STOP' message to Spread Media - at cost to me.  I was also advised to call Spread Media's premium rate phone number in order to get a refund!

So, lets get this straight:

• Some random company uses deception in an attempt to trick me out of money (which I ignore)
  
• A month later they attempt the same deception - this time charging me £1.50
• The UK regulator tells me that I have to give the thieving bastards more money in order to get my money back and prevent the scum from taking more.

Great regulating guys!  Show those scam artists who's boss.  That £500 fine and formal reprimand you gave them last time sure did the trick.  No wait, it didn't - you just told me on the phone that there's already a bunch of complaints about Spread Media's latest deception!  I guess the paltry fine and slap on the wrist didn't work after all?

Readers, what d'ya reckon?  Should I text 'STOP' to 68888 or not?  PhonepayPlus seemed to think it'd only cost the same as a normal text message, would put an end to future messages from Spread Media and would be more or less essential (if I get more messages and get charged it will be apparently my fault for not sending the 'STOP')