try to call the customer care mayher, so you could really sure that ther is blocking feature added for you not to recieve short text message...
you can als check your online account
log in to your account > hover the mouse to the mobile life > select email and text tools > email filters > under
Block all messages from E-Mail to handset (make sure that it is set to NO ) and
Allow messages ONLY to "My Phone's E-Mail address" @tmomail.net (is also set to NO )
hope this will help