Airtel — airtel 399 recharge - data is not working

Address:

Mumbai City, Maharashtra, 400033

I have done the recharges of rs 399 in mumbai circle for unlimited calling and data. It was done from airtel app and the offer was showing as unlimited calling and data.

The data is not working, i visited to airtel customer care, they are saying your sim is 3g, i will have to but new 4g sim and do the recharge again for rs 399. The earlier recharge is gone and will not be refunded.

Its really ridiculous and airtel is bluffing with customer money, if recharge is not applicable for my sim then why they shown as offer to my account in airtel application. They have accepted money also and showing 1 gb data daily in my account but its not accessible