[Resolved]  Shaha Finlease — loan closed in 2004. now getting a call stating 56k is due

Have taken a loan and paid up on 2004. After 14 years, getting a call stating loan amount due is 56k, which needs to be closed immediately. Even after sending proofs on loan closure, still i'm being asked to pay 16k and being threatened failing which this record would be sent to cibil, and to shaha finlease bombay office for hard core collection, where people will not talk politely and handle with rudeness. Need guidance on how to handle this case