Bajaj Finserv — lod not shared by bajaj finserv despite several requests

Address:

Babusapalya, Kalyan Nagar, 560043

I have an existing home loan with bajaj finserv. Account number 404dhl35018323. Bajaj finserv did not reduce the interest rates depite rbi repo rates coming down. I informed then the wish to reduce the interest rates, for which they asked me to give them rs.15, 000/- to make the change. When i told them i'd rather go to some other bank & and them for the list of documents, then are not sharing the same. It's been over 4 months of me persuading them to shae me the lod. They are not. What do i do?