Haven't got cashback (HDFC) on purchase MacBook Air M2

I had ordered (W1059036546) MacBook book air M2 on online apple India store on 22 sept 2022 and got MacBook on 3rd oct 2022. I had made payment using HDFC card. As per offer, I was suppose to got 7% instant  cash back on using HDFC credit card with in 6 days, but I haven't got any cash-back yet.