Amazon India — Item not delivered in time and it's not allowed to cancel the order.

I have purchased a Crompton whater geyser on 21st October 2023. At the time of order it's shows item will be delivered on 27th October but it's not delivered. On 27th it's shows that the item will be delivered on 31st October now also it's not delivered. On 31 st it's shows item will be delivered on 4th November again it's not delivered. I contacted to customer care so many times but problem is not resolved. And the they said that it's the item will deliver before 8 th November. Still it's not delivered. And it's not allowed to cancel the order.
Kindly look into this matter and take the action against this type of carefullness in service.

Thanking you.