[Resolved]  Axis Bank — Credit card issue with billing

I have been using axis bank credit card from the past two years and have been paying the credit bills on time once the Bill is raised for the month but i never checked my statement details as i trust my Bank. But there is something wrong that I don't understand. Please justify the issue. In 11th Jan 2017 I have purchase a shoe online from Snapdeal.com (e-commerce) was Rs. 2650. The amount paid by Axis bank Credit Card and converted into 6month EMI, On 15th Jan 17 I've received the product which was miss match so I cancelled the order and return the product to Snapdeal.com. On 16th jan 17 the merchant (Snapdeal.com) return the whole amount (Rs.2650) to the Axis Bank Credit Card. And I forget to tell the bank that order has been cancelled. Thereafter as early i said i never checked my statement details as i trust the Bank, this month i checked the statement and i found that I have paid 2 EMI Feb and March for the same so i contacted to customer care regarding this aspect and their response to it is not satisfactory. Why i am paying additional charges which has been already credited to The Axis Bank credit Card by the merchant. I am attaching the all statements. Please help me to figure out this.