HDFC Bank — Grievance-NetBanking & Account blocked

A/c No.- [protected]
My Internet banking & account has been blocked since 3 days due to multiple failed UPI transactions which I attempted on 12th Jan 2021 & HDFC bank is unable to take any action.
The customer care numbers don't connect & provide any appropriate support or response.
Upon visiting the nearest CBD Belapur branch on 14th Jan 2021, the Assistant manager-Mr Ganesh Deshmukh advised me to write a manual application requesting to unblock with relevant account details & self-attested address proof. He was extremely casual & mentioned that it would take atleast 5-6 working days to unblock the account since the bank is short staffed. Such responses & timelines are highly unacceptable especially in the COVID times, where internet banking is a necessity.
Upon contacting my relationship manager, she said the process has not been followed properly & has advised me to visit my home branch Sahar road Andheri & fill an unblock request form (more than 30kms from my home).
I would request immediate assistance on the above matter to unblock my NetBanking & account as it is my salary account with all loans & EMIs linked. Such unreasonable timelines will jeopardise all my auto-debit EMI mandates. This is a clear case of harassment & I will really re-think about my decision to continue my account with HDFC.