Myntra.com — order cancelled by vendor for no reason

Address:

New Delhi, Delhi, 110068

I had ordered mango cateye sunglasses (Product code: 6995289) on 1st august. The vendor cancelled my order on 5th august saying product not available, although the same vendor had the same product listed on myntra for higher price. Evidently, the vendor cancelled my order just to sell at higher price. The vendor should be compelled to fulfill his obligation.