Amazon India — Delivery issue-Order On the way, but running late.

I have bought a Avaya IX CU360 Video Collaboration (Order Id- 402-[protected]) from amazon India and the delivery date was set for 12 May 2022 between 10 AM to 6 PM. But the product was not delivered on that day.Even the tracking status was not updated, I contacted the customer service, But they have no clear information regarding the delay & they asked me to wait between 13 May to 18 May. Amazon application show me the different status and after contact to the customer service still it has not updated.. I have attached a screenshot for your reference.