HDFC Bank — Credit card

Respected sir/mam I am Sameer Kumar karna and I have Paytm hdfc credit card and on month of September unauthorised transaction occurred but the bank is saying I have done that but on that same day i blocked my card but after that I talked to bank customer executive to issue a new card so that I can pay the bills but bank is not issuing new card and I talked to Paytm customer care they told me we can not do anything bank will provide you the new card but they are not listening my word I have waited for 4month regarding that but they are including interest and it's affecting my cibil score also and also if I don't have a new card I can not pay the bill bcz previous card is blocked. And I talked with the nearest branch they told me that talk with Paytm and Paytm is saying talk with bank I am very much stressed from this kindly help me out from this