Amazon India — Non delivery of prepaid order no.[protected]

I had placed a prepaid order of 3 steel drums of 15 l capacity from Amazon.in on 18-10-21. The promised time of delivery was one day. I received a message from Amazon on 21-10-21 at 8 am that my order has been delivered. Since I had not received the order, I immediately called the customer care at 9 am and the customer care executive asked me to wait till 9 pm. When, I didn't receive the order till 9 pm, I called the customer care team again and was told to wait till next morning. On calling again next morning, the customer care executive stalled me again that they will conduct an inquiry and I will have to wait for another 5 days at least for resolution. After this call, Amazon team blocked my phone number from calling the customer service again.
There was no communication from Amazon team for the next 5 days. As my phone number was still blocked by Amazon team from calling them, I contacted the customer service on chat. During the chat, I was told that no refund or replacement will be provided by Amazon as the order has been delivered.
There was no delivery of order, no courier person took my signature, there was no detail provided by Amazon about their so called inquiry.
I have been continuously harassed mentally by Amazon team, their customer service team is absolutely worthless and they even have the audacity to block a customer from calling them when they don't want to resolve the issue.