Amazon India — My order is too late

Hii
I am ordered an powerbank on 30-november
The estimated delivery date was 6 dec to 10 dec
Then i am contacted to amazon axecitive they said me it is on the way
But at 14-dec they said me that your order is cancelled because your address is not deliverable
So it takes 14 days to check that my address is available or not
What are you doing and they are saying me that reorder it we will give you before 17-dec then i am reordered it then i contacted to amazon associate and they said me that it is not our responsibility to give delivery before 17-12
Bit they promised me that they deliver it before 17-12
How big lier are they