Vodafone India — disconnect postpaid card.

Address:

Byculla, Mumbai City, Maharashtra, 400009

I visited vodafone branch located at byculla. I want to activate my sim card. My sim card is prepaid and when i go to mustafa sir he force me to changing prepaid to postpaid. I complaining about his in manager room but its useless.
He told me that i[censored] dont buy postpaid card your sim will be block by vodafone limited. As now i have to pay 499 rupees per month. There is no issue for payment there is a issue for postpaid sim which is useless for me. I just want my prepaid sim back and disconnect postpaid to prepaid.