HDFC Bank — hdfc fastag issue "session timeout or error on page. please try again after sometime"

Hi Team,

I was trying to apply for hdfc fastag on nov 28, 2019. As i have a savings account in hdfc since 2010, i thought of availing the hdfc fastag facility.

I wanted fastag for my personal vehicle so total amount to pay was shown as rs.500

After i was done with payment, a screen appeared that showed "session timeout or error on page. Please try again after sometime"

However, amount of rs 500 was deducted from my savings account.
I am not sure if my request was successfully put.

I called on the hdfc fastag helpline number . But this is always busy or not reachable.

Could somebody from hdfc please look into this matter and help?

Regards,
Lakshmi