HDFC Bank — hdfc bank mirevenue hold through gefu

The hdfc bank has put a hold on my funds of rupees 624.98 as mi revenue hold through gefu, the customer service is not able to give any info on this.
First of all it's hard to reach customer service because it takes a alot of time and the ivr options are very difficult and tricky to navigate, after all the effort the customer service is not help full.