Vodafone — Requested for deactivation of my postpaid sim card

Dear customer care,

Im a subscriber of vodafone chennai. i have left chennai and came to chhattisghar. I want to disconnect my number.Please advise the procedures theat needs to be taken to disconnect the existing number.I will not be able to travel to chennai to get this procedure completed.Please advise the best possible way to get this done from my place in rajnandgaon chhattisghar .Looking forward for your call/Help.

Thanking you,
naryan