Amazon India — about my power bank

Address:	Krishna, Andhra Pradesh, 520003
Website:	Amazon

Sir i had purchased a product power bank by paying full payment to the company on 26/01/18 and my delivery date is 06/02/18 but till today i did not get my product deliverd and even the company don't have any details about the deliver till now so i want to take a strict action against it and no one is answering correctly and they were not even taking any action against seller and saying me that after 10 days money will be refunded or the product
What type of attitude they r and they have asked me for 48 hours but still not having any response and says me again 48 hours to track seller