Simple mortgage cancellation limitaton

Now the mortgagee shall execute a "Reconveyance Mortgage" deed in your favour.  Did you pay the interest till date?

No idea reg interest payment.

But as a owner  j need to cancel this entry. Bcos i am not the borrower. 

Further we dont know the borrowet adn lender and i dont want to contact the lender .

So by limitation how can we cancel through court