HDFC Bank — holding amount in bank account without informing account holder

Since my vehicle loan is pending from last 3 months due to this covid pandemic, and i've already opted in for moratorium,
Even after i opted in for moratorium hdfc bank hold the amount of rs.7214/- without my consent. And i'm trying to contact customer from last 2 days but there is no reply from their side.
And my grandfather admitted to hospital and there is no amount in my account.
If they didn't unhold my amount as soon as possible i will not able to pay amount to hospital and bank will take the whole responsibility of it.
Thank you.