HDFC Bank — regarding fastag through hdfc online payment

Address:

9A V D Marg, Lucknow, Uttar Pradesh, 226001

Reference-Hdfc Bank Fastag — Track ID-HR[protected], Your Customer Id is[protected] and Wallet Id is [protected].

I have applied hdfc fastag through online and made payment of 500 INR . The details of the application is as referred above..

There is no way to contact hdfc fastag guys as the customer care number given is busy or not being attended.
I have not yet received the fastag, nor my money refunded and when logging into site ""https://fastag.hdfcbank.com/RetailRoadUserLogin/Index"", it showing “no record” . I have lost Rs 500 and I am stuck.
Sandeep Shukla, Mobile [protected] and [protected]