HDFC Bank Bank Fastag — fastag not yet received, i feel so helpless

Address:

Nigdi pradhikaran, pimpri chinchwad, 411044

Hello,

My application reference number is hfr411936

I have submitted fastag application on 19th nov 2019. I received mail mentioning wallet id on 22nd nov 2019. But till today, i haven't yet received any mail or call from hdfc representative for further status. As per message displayed on application form submission, "you will receive fastag within 7 days and our representative will contact you", but no update received.
I tried customer care number 10-20 times a day. Most of the time it is busy orsome music is playing.
I am very disappointed by hdfc procedure of fastag. No proper updates/sms received.
Let me know, when my fastag will get delivered.