Amazon India — Falsely blaming customer for failure to deliver

I ordered a laptop using the app on the 6th and was promised delivery by 9 pm on the 7th. It did not happen. Amazon apologised in a message attached to this order and requested me to wait till Monday.
I was willing to - until I saw the reason that has now been appended to the order. Apparently delivery could not be made because of the unavailability of the OTP.
This is simply false. No agent came to my home, much less asked me for the OTP.
It is disgraceful that Amazon feels the need to lie their way out of a failure to make good on their commitment