Amazon India — Issue with Order no :[protected]

Address:	Kolkata, West Bengal, 700032
Website:	www.amazon.in

I had purchased three mobile phones from Amazon's online store dated 24th Jun 2017. In their website they have provided offer to purchase products in easy installments if having debit or credit card and also featuring month wise EMI options against various banks. I preferred to buy in 24 months EMI and placed total order amount was INR.21997 which was paid through my credit card. But surprisingly after getting the product delivered I came to know that 24 months EMI will not be possible. I spoked to their Customer Care - Leadership Team (Mr. Bhargav) dated 5th Jul 2017 and he is saying that I have to speak with my bank and they will take the final decision regarding EMI options. My question to all of them is why I have to speak with my bank and whether it was mentioned in their website where they are giving offers to customers against Debit or Credit Cards disclosing that FINAL DECISION WILL BE TAKEN BY THE BANK. No where it was disclosed as I am having all the printscreens with me.
I believe they would look into this matter very seriously and provide a resolution at the earliest in order to regain their customer's smile if they wish as being a customer I am very much upset as prior buying they are saying something and after selling the entire matter getting changed.