Citibank — complaint against 3rd party citi collection agent seema

Address:

Citibank Gurgaon, New Delhi, Delhi, 110017

This is in regard to a third party citi collection agency rep named seema who is calling and threatening me to make the payment for my amex card which is already signed as a write off on my credit report due to unexpected health circumstances i was not able to pay and it went to collections and they are calling me back to back and harassing me and threatening me. I have just got out of hospital and this if what the throes party collection agency is doing