HDFC Bank — mt revenue hold

HDFC Bank put hold on my funds of Rs.785.50 mi revenue hold, thorough gefu, ac number is 5010*5252.
IFSC-HDFC0003870
Branch- BROOKE FIELDS
First of all its hard to reach customer services, it's take lot of time and IVR options are very difficult and tricky to navigate.kindly do the need ful