Vodafone India — threatening from collection agency

Address:

411017

I have been receiving a call from vodafone collection agency.
In regards, to payment of a vodafone number where my number ([protected]) was just a additional phone number. I'm no longer in touch with the person.
I have been receiving calls from collection agency for bill payment of that number. Today i received a threatening call from their agency ([protected]), stating they will block my number ([protected]) and call all my contacts and inform that i not paid any bills.
Is vodafone seriously monitoring consumers personal contacts/calls and will disclose the privacy?
I don't think that is right as per trai privacy policy for consumer. I have a call recording and gonna file a complaint to trai, and will surely take it consumer forum.