After I sent the numbers and I got reply today as below from greivence
At the outset, it is unfortunate to note that you are inconvenienced by the promotional calls received at your end claiming to be from HDFC Bank. Upon receipt of your representation, we initiated a detailed investigation at our end and noted that the contact numbers( Telecaller's numbers) shared from your end in your e-mail does not belong to HDFC Bank or our authorized channel partners.
We would like to assure you that we, at HDFC Bank, follow the protocols framed by TRAI on Do Not Call/Do Not Disturb(DNC/DND) registered customers diligently.
We seek your kind understanding and co-operation in this regard.
Please feel free to write to us at:
customerservices.cards@hdfcbank.com for further assistance / clarifications that you may require in t
his regard.