In response to an NTV advert tonight, sent an sms with the code "DOT" to 5525 to get Daddy Owen's "Tobina" ringtone.

Got 2 automated sms messages which "chewed" 60 bob of my credit.

The link in the sms to the ringtone is not accessible -- yet have already been billed.

Have also been AUTOMATICALLY subscribed to receive 2 ringtones per week that will be 'chewing' 60 bob.

How are these SMS (ringtone) services supposed to work?