Airtel — text problem

Address:

Bangalore, Karnataka, 560090

I was unable to send or recieve any messages to my number [protected] and i changed sms center number too which didnt work and i have sent a mail to [protected]@airtel.com. But i was replied with this mail is not authorised to the number and when i went for authorisation and registeration. They had send an otp to the number but as i was not receiving any messages i couldnt get the otp