HDFC Bank — hdfc fastag not received

Address:

560068

I had applied for a fast tag on 9/12/2019 through the hdfc bank website and was assured that i will be receiving the fast tag within seven working days .
after about a week later i get an email stating that the fast tag has been issued and that the fast tag has been recharged fro rs 300.
i also got an email stating my wallet id and customer id as well
but i still have not received the fast tag and the customer care number provided for fast tag customers is always busy