For some reason, I can’t send SMS to a radio station competition

[DaleKit]

At first I didn’t have any allowance, added £20, I got a notification from 3 confirming, I tried the comp again the next day, I thought  it had worked as 3 charged me for the SMS, can you help.

[Anonymous]

Check either the My Three app or chat with customer service to ensure premium rate text barring isn’t in operation.  That’s likely to be the cause.