HDFC Bank — Smartbuy Reward Point Scam

I have not received reward points for the following order ids which I have done on Amazon through smartbuy.
[protected]Rs. 19099)
[protected]Rs. 42999)
I have been informed that the transaction has no tbeen done through smartbuy. I am 100% sure that I have made this transaction through smartbuy and I have been using this card for the last 4 years, so I am not unaware on how to make a smartbuy transaction. This is absolutely ridiculous and I need immediate help on this. I have been following up on this issue since October 17th.

Regards,
Jaspreet