Airtel — airtel fastag

I have ordered fast tag id through airtel app, i received message that my fast tag id delivered. Till now when i check through airtel thanks app it is still showing delivered but I have not received yet due to this i am facing issue at toll plaza.
This is very frustrating as my friends order fastag from other service providers like paytm and they got there fastag in 7 days.

Whenever i check the customer care executive always busy the call get disconnected.

My airtel number is [protected]