Amazon India — Product not delivered but is showing delivered on amazon internet site.

Website:

www.amazon.in

On 21/03/2016 i ordered a redmi note prime mobile phone+screen guard+back cover prepaid and online on amazon.In of rs. 8274/- which were supposed to get delivered to sanjeev kumar, punjab national bank, rajendra place, delhi 110125 before 26/03/2016 as promised by amazon. But due to holiday on 23, 24, 25, 26, 27 march 2016 bank remained closed. Still amazon internet site is showing that the mobile phone was delivered to the customer on 25/03/16 at 07:26pm, though sanjeev kumar was not contacted by the courier service personal before giving such delivery and since sanjeev kumar was not there in bank as bank was closed, the mobile phone delivery receipt did not got signed by sanjeev kumar. Despite of these facts amazon has yet not taken any corrective action to resolve my problem neither they are processing refund of rs. 7999/- in my bank account. Daily i am calling amazon customer care and daily they are just saying me to wait for some more time. Out of the three items ordered, except mobile phone rest have been delivered by amazon.
I want amazon either to deliver the concerned mobile phone as early as possible or give my my money back as refund as items were supposed to get delivered before 26/03/16. 5 days have passed away and amazon is showing no progress in my fake delivery case.
Everyday i am talking to a new customer care executive of amazon and wasting my precious time in explaining the matter to him/her which is giving me tension and pain.