Punjab National Bank Housing Finance [Pnbhfl] — Documents and loan swap updates

Nearly more than a year have requested the bank to update my loan account with the swapped flat details but its is still not update and despite continues walk into the bank and customer complaint nothing has changed all went in vain. feeling stressed and its disturbing my work and day to day activities and its block my next step to pay the builder the pending payments via financial systems. Please do the needful and kindly guide me to get the documents of list of documents, sanction letter and interest certificate with the swapped flat account.