HDFC Bank — Fake hdfc credit card agent

Address:

Phase 2 , house no. 15, Housing colony, udhampur, jammu and kashmir, 182101

From last three four days i got call from hdfc credit card agent and asking me to pay my credit card bill but i pay my credit card bill completely. when i am saying them that i payed my bill, then they are arguing with me that you have to pay this amount if not then we will call you regularly. i am getting irritating with these kind there act. please take necessary action again them. The last four digit of my credit card is 7751 and my mobile no. attach with this card is [protected]