Airtel — Airtel thanks benefit not credited

I recharged my prepaid Sim with Rs.699 plan (3GB/DAY) + 56 days prime membership on 8 March in advance, my recharge pack activated on 23 march.But I am not unable to activate prime on my Airtel Thanks App. The logo is Blurred(claim button) I called many times to the customer care but they didn't have any resolution . I also complaint on their airtel thanks app. Still not get any resolution.airtel is are trying to fool their customer and making false promises. I am also sharing screenshot and complain screenshot.