Have you tried to push the SOS button located next to the overhead light controls and sunroof switch (if you have a sunroof)?
Its possible you may get a message saying BMW Assist is not activated and to contact your BMW center. If you do, you'll want to contact your selling dealer and and ask them to send in the BMW Assist form for your country. Dealer must let BMW Assist know who the purchaser is, etc in order for the car to make its initial connection to setup your account.
4 years of BMW Assist Safety plan are included for USA buyers of new BMW's. Not so sure this is same all over world.