SBI calling me for credit card bill after 13 years

Hi, I was holding a SBI Credit card in the year 2004 and my father was hospitalized and I was not in a position pay. But due to harassment, somehow I paid cash and the collection agent was gave me dummy receipt and the agent escaped with cash. Unfortunately I didn't came to know this. After that I never got the calls and I also took few loans like vehicle and housing loans later after 6 years where my CIBIL score was very clear. All of sudden I have started getting calls from SBI and also suddenly the SBI card showing outstanding in my CIBIL report and this happend from 2016 onwards. I have clearly told SBI that I have nothing to pay and I told them to file a case against me. But bank is not ready to do so and started harrassing me over the phone for payment. I have mentioned several mails to bank but no use of it. Please guide me how to proceed as the bank is started approaching me for almost 12 years and unfortunately I couldn't hold the documents as the years passed and lost during shifting of the house.