HDFC Bank — Money taken for mirevenue hold through gefu

The hdfc bank has put a hold on my find of rupees 845 as mirevenue hold through gefu,
Account no. : [protected]
Ifsc code : hdfc0000094
Branch : mangalore
The customer service in not able to give any info on this.
First of all it, s hard to reach customer service becauseit takes a alot of time and the ivr option are very difficult and trickly to navigate, after all the effort the customer service is not helpful