Vodafone India — Invalid number issue

Address:

Chittoor, Andhra Pradesh, 517502

My prepaid Vodafone network lost suddenly from 15 days.even Vodafone centres are also not able to find what the problem is and creating a great inconvenience to me regarding this issue..at last they said please convert into postpaid..because of the necessary with my number is agreed.but they are also not able to process my number to be worked..this is a great disrespect on Vodafone from me.to cause such a inconvenience. .so please try to get back my number in prepaid if Vodafone can. They are saying that the number is blocked cause of no usage since a month..but that is false as I have been using that for daily..even the head office from hyderabad are not able to solve problem.then where should I solve my problem for..