Myntra.com — Order cancelled by Myntra after 20 days of order date.

I orderd 1 products at very low price but myntra cancelled the product after 20 days of order date by giving a message that order has been cancelled because they can't deliver that product at my pincode but the product is deliverable on my pincode at high price (twice at which I ordered) and that product was deliverable on my pincode that time also when I was ordered. The product was shipped that was showing on their tracking status, but after 20 days they cancelled my product without my permission . They are making fool to customers and wasting customer's time. If I'll go to court for this then Myntra will compelled to pay compensation. Suggest me I should move to court or Myntra will solve my problem.