HDFC Bank — fastag

Address:

Pune, Maharashtra, 412207

My fastag is activated on 17th nov as per the sms confirmation received from hdfc bank. But till date i have not received the sticker physically. Even i tried to call the helpline number but no body is responding. My request to concerned authority is to kindly look into this issue and let me know the fastag sticker delivery status.
The sms which i received from bank regarding the fastag activation is as below.
"dear customer, your fastag has been issued successfully. Your customer id is[protected] and wallet id is [protected]. Hdfc bank limited"