HDFC Bank — Account blocked without any reason

I have account in hdfc narela branch, delhi. My account has been blocked by bank without any prior intimation. Neither am i able to withdraw cash from atm, nor do netbanking. Even the amount is not getting deposited in the bank. Can't even add account to gpay. I have already visited the branch twice. The reason they gave was kyc updation. After successfully submitting my kyc documents last week, i received a mail today that my request has been successfully processed but the issue is still not resolved. This is highly frustrating. Account blocking for too long without any reason is sheer mental harassment from bank's side. I regret opening account here. Didn't expect this poor customer care from hdfc bank.