HDFC Bank Bank Fastag — no confirmation / receipt of fastag

Address:

Pune, Maharashtra, 412101

Dear team,
I've applied for hdfc fastag on with application ref no HFR346698.
I've been trying to reach your CSR but they always say system is not working and do not provide any info. The CSR refuse to also register any complaint & and neither arrange for any call back.
Also complained on email I'd fastag.[protected]@insolutionsglobal.com but to dismay also no response...
Can you please help escalating or providing info where to escalate to receive the fastag immediately or at least some info on processing Or getting the refund..