For any queries, you can contact NSDL at

Address :
National Securities Depository Limited
3rd Floor, Naman Chamber,
Plot C-32, G-Block,
Bandra Kurla Complex,
Bandra East, Mumbai - 400 013,
India.
Tel No: 91-22-6944-8400/ 8500

Email :fpiassist[at]nsdl[dot]com