Airtel Recruitment

Has anyone applied for any of AIRTEL'S Vacancy..why is it giving problems?i cold not enter my phone number..keeps saying invalid integer..i tried different kinds of format in writing my number but to no avail..is this not one of their pranks again..maybe they have got someone to occupy all the post and they just advertise vacancy for the sake of formality...why are they so problematic??any one got a solution to this maybe i am the only one experiencing the error???