ICICI Fastag — fast tag is not delivered

Address:

298, B-5 Rohini Sector 5B, New Delhi, Delhi, 110085

I had raised a request for replacement of my fast tag on 23rd july 2019 as my tag is no longer working.
I have raised following requests complaints for my tag replacement
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Starting from 23rd july 2019.
I am following up from last 40 days even though the max time required is 7-8 days. Everytime their representative says that we will deliver the tag within 48 hours but no tag is delivered even after calling and raising so many complaints.

When i asked them to cancel the tag they are asking for pan card, cancel cheque, hand written letter and several days just for cancellation.

Either i want my fast tag to be delivered immediately or i want my fast tag deactivation so that i can purchase fast tag from other company.

Please escalate this issue so that atleast nobody else have to face this issue in future.