HDFC Bank — Fastag--Non receipt

I had applied online for 2Fastags thro your portal on 27/12/2020. And on 28/12/2020 I received messages that the applications have been successfully registered with the f0llowing references
HFR 01779735
HFR 01779777.
It was also informed that the fastags will be delivered within 7 working days . But till date the same has not been received . The residential address in the application is
13/92 SIVASAILAM, PAMBOOR, KOTTEKKAD ROAD, KUTTUR PO., THRISSUR-680013.
This is a very pathetic case of inordinate delay .
Kindly do the needful urgently.
DR.RAJGOPAL P MENON