Amazon India — 100/- cashback not received though I followed the T&C

Dear Sir/Madam,
I have done my Jio mobile Recharge for Rs. 666/- with platinum debit card but 100/- cashback not credited
As per Amazon offer period 11th Aug 00Am to 11:59 pm I have done recharge but Rs. 100 cash back is not credited.
Amazon Customer care informed me that the card has used earlier for other order which is out of the current offer period. I have requested them to issue the cashback as per the terms and conditions mentioned in the offer which I followed exactly.
Plz find the order details:
Order id:[protected]
Jio prepaid recharge: 666/-
Note: in the T&C Amazon has not mentioned any condition like the offer is applicable only for first time Or only one time for the platinum debit card. But they rejected my cashback request that the card is used earlier.
Kindly refer to the attached screenshot T& C and do the needful.