Vodafone India — I am complaint about post paid connection

Address:

628653

I used post paid connection for past three years. But i was there in overseas for two years and i put my number in safe custody. I tried to cancel or make my number into prepaid to avoid the unnecessary bill payment but unable to do it. I have only limited time while i was in India. They are asking me to disconnect from Chennai where i got the sim card. I am paying the amount unnecessarily. Please help for me to overcome from this situation. Please help to cancel the service or help to convert into prepaid sim.

Phone number: [protected]
emailid: [protected]@gmail.com