HDFC Bank Bank Fastag — money deducted but did not receive any acknowledgement or tag id

Address:

560068

I have applied for fast tag on 28th nov 2019 and two times rs 500 has been deducted from my hdfc regelia credit card but i didn't receive tagid or any ack for that matter from fasttag team.
My credit card number is [protected]. I tried calling the customer care number for fast tag [protected] but inspite of calling 100 time it is busy or if it rings no one picks up the call.
Please do the needuful or call me at [protected]