I am using same Vodafone connection (number) in Bangalore since 2004. I got this converted to post-paid sometime in 2006-2007.

Recently I have faced a lot of network issues which are acknowledged by Vodafone technical team. As I understand the backend network team is working on the issue. They were supposed to install network boosters in my area, but now when I inquired I came to know that network boosters are out of stock! They may get them in the month of March.

I have thus decided to move my post-paid connection to pre-paid so that I pay for only the usage. I have never got any conclusive answer from Vodafone Customer Case so far.
I have seen pdf format forms on Vodafone web-site (circle specific), which do offer post-paid to pre-paid conversions.
However, I was first told that such a conversion is not allowed. I have to surrender existing post-paid connection and then take a new pre-paid connection.
Later I was told that Vodafone is facing “Technical Issues” due to which this conversion is not possible. They asked me to wait, but no time line defined. I am not sure how much I have to wait?

I was in touch with Nodal officer, but I have yet seen any decent effort to resolve my complaint. All my efforts to preserve my existing contact number have not so far succeeded.
I hope you can understand how difficult it is to move to use a new number.
I saw some positive replies on this forum, so though of giving my issue of post-paid to pre-paid conversion a final try.

I am not sure if this information is useful to you, but still passing it on:
Original Complaint Number: 1231045196
Reference Number for communication with Nodal Officer: REF:453381880435 and REF:454250538608

Till now, this is my WORST EVER experience with any service provider.

Regards,
Sachin
9886444754