HDFC Credit Card — Credit Card Full Amount Paid But Again bill generating

Address:

BANGALORE

CREDIT CARD NUMBER:[protected]
93, 005 Outstanding Amount Paid on 16/08/2019 Itself.
But Again 21, 000 Bill generated
HDFC Credit Card Department Again and Again Sending Recovery Executive to my House giving lots of Torture to me and my Family.
Please Help on this Issue.
I Recently Lost my job in COVID-19.