HDFC Bank — Hdfc bank put a hold of 704.36 from my saving account.

Address: angul

I am a hdfc bank customer. Hdfc bank put a hold of my saving account number [protected].
Hdfc bank put a mirevenue hold through gefu of amount 704.36.
I contacted nearest branch angul. They said they cant help me in this i have to contact customer care. I tried too many times but call not connected. Please tell me what to do.