STOP Unauthorised SMS’s to your Cell Phone 

Works only on a Blackberry : Select  Options > Security Options > Firewall  > Block Incoming Messages >Tick SMS > Then Exceptions> messages from Contacts >Tick box > Then save.

You will not receive any further rubbish from your Banks or other Organisations trying to disturb your peace. ( Words vary according to model ) If you want a particular Notification you can set the number, but you are in control of your phone.You also can use Blackberry Messenger Servics which is controlled by a pin number. TAKE CONTROL OF YOUR PHONE CALLS AND MESSAGES