[Resolved]  Flipkart — no cost emi fools me with interest in the emi

Address:

Chennai, Tamil Nadu

Order date : 14 april 2018.
Invoice number : fabokh[protected]
Product : vu 98cm (39 inch) full hd led tv

I have purchased a product from flipkart in the mentioned date from my friends flipkart id. I had an offer that no cost emi for 9 months.
So i paid through my credit card. I never notice the monthly due since i have another purchase bills along with this.

Recently i notice the amount i paid to my credit card is not reduced the interest. I already 7 due for my order. I notice that i am end up paying the emi with interest.
I checked with bank they replied me that the interest will be bare by flipkart as a discount. But that is not the case here.

In the invoice the amount mentioned is 18999, and they mentioned the discount is applied but not applied really. I am end up paying the interest that costing me 18999 + gst.

Is this the way major online seller like flipkart do. I would like to file this against flipkart and needs a resolution on this.

Regards
Caxton