Airtel — Cancellation of my postpaid simcard of mobile no. [protected]

Address:

Mumbai City, Maharashtra

I am using postpaid simcard of mobile no. [protected] since 2010 while I was in Kolkata. Since I have transferred to Mumbai, I request your kind authority to cancel my this mobile no. [protected]. Kindly let me know the detail procedure to cancel this number. You may give these details on my new mobile no. [protected] and or on my e-mail address which is registered with you. My e-mail address is [protected]@rbi.org.in Please do the needful and oblige, Regards, Devendra Sahadeo Narwekar