Flipkart - Overcharged i e more than MRP

On *th sept **** i ordered a product from flipkart i.e Vetoquinol Samfur oral route feed supplement which coasted me ***Rs including shipping of **Rs. But on *th sept **** when i got the product i found that the flipkart has cheated me by overcharging i.e the original price mentioned on product was ***Rs and thus i lodged complaint with flipkart and thus they admitted their fault and said seller is ready to refund your **Rs, but on this my question to company was THAT WHY YOU HAVE REGISTERED SUCH SELLERS WHO ARE CHARGING MORE THAN THE ORIGINAL PRICE.??
But for this question no answer i got only one thing i got to hear i that WE WILL REFUND YOUR EXTRA AMOUNT. But for this instance i don't want my refund and thus wanna fight a consumer court case against such cheapster company as like that i dont know that how many other consumers have been fooled up