HDFC Bank — Reversed transaction not credited

Hi,

I cancelled a product on Amazon which costs Rs. 91, 500. I got a message from HDFC as

Ur transaction on HDFC Bank DEBIT/ATM Card ending 2132 for Rs. 91500 has been credited/reversed by AMAZON 000 on[protected]:05:25:17

When I checked my transactions, this amount was never credited. It been more than 20 hours since this message.
Unfortunately, I cancelled another product which costs the same amount and I got the same message from HDFC and the amount was not credited for that either.

So it is Rs. 1, 83, 000 that has to be credited to my account.