sometimes ago i came across Airtel sms buy and sell.i intended buying a digital camera.i sent the words digital camera by sms to 38665.i was sent a telephone list of marketers by sms.But to my amazement, over one month after purchasing this camera,im still recieving different sms sometimes at odd times at nite,telling me this person has this or that to sell.this unwanted sms is driving me crazy.pls how do i stop it.