Airtel — fastag not delivered even after 21 days

Address: 221, H.A.Lane, Chickballapur, 562101

Website: airtel

I've ordered for a fastag on December 15th, but it is still showing shipped. It's been more than 40 days.So I would like for a refund or would like it to be delivered, as it is causing a huge problem. And there is no way of tracking where exactly the fastag is. There is no way to even Lodge a complaint regarding the fastag in Airtel app. Toll free number doesn't provide a place for this section