Barclays Bank — My outstanding shows 67k even after 15 years

I had a personal loan with Barclays Bank India way back in 2007 and I made the complete payment of it. I remember my ECS was cancelled because of some reason and I made in person payments who came and collected every month. It has been almost 15 years now since I took the loan and my CIBIL shows that I have an outstanding 67k~. I'm shocked to see the outstanding balance on my account reflecting in CIBIL. I believe 3rd part company collected payments for Barclacys back then.
Could you please check and confirm why it is still showing as an outstanding amount.

Loan account:[protected]

If there had been outstanding, i would have got calls from Barclays to pay it, I didn't receive any of it but i ' m surprised and shocked to see the outstanding showing in my CIBIL. This is hampering my credit score at the moment.