Received my bill and was charged 39.99 for a # number that was dialed from my phone. My son uses the phone, he let one of his loser friends use the phone and the loser did it. Was a paid chat line. Phone customer care to verify and to block it from being dialed again. Told there's no block available. They have a block available for the premium sms scam why not the # number. Right now my only option is to suspend the phone so no one can use it but I still have to pay the montly service fee.
Which device is your son using? Most devices have built in settings with can block a number from being called or receiving any calls from including text messages. Also there is a plenty of apps on the app store whoch will block numbers as well. In all i am sure they can block a number but its under the Extreme texting services which are offered.