I'm trying to reply STOP to 85088 and I get an error 23 code.
I've got ~£10 left on my limit this month so unless the amount it's trying to bill me for is over that, I presume the issue is that iD haven't yet approved texts to 85 numbers on their network?
Best answer by Ryan
Have you checked whether or not the premium bar is turned on within the settings of your account online? This is something that can prevent text messages from being sent to short code numbers.
If you feel that the company sending you those messages has been charging you unfairly or you simply want to get in touch with them, then PSA Authority (Link) is a great site to use in order to contact the company directly.