HDFC Bank — fastag customer care number not working neither I can login to my account

HI I have applied for fastag through HDFC BANK. I have received the message about activation of Fastag for my car no MH12NJ6298.
but till date I have not received any tag. While purchasing tag I have received message from HDFC BANK that someone will contact me. But till date no one has called me. I have tried to call on customer care number but for all 24 hrs the number is busy.
When I have tried to login to my account it is always showing as my password is incorrect. When I have tried to reset the password I get reply as I have not registered user.
Is there anyone from HDFC bank is going to help?
You people have already charged 500 rupees as fees and now no one is turning up to help us