Myntra.com — I'm complaining about their return policy.

Address: Kapurthala, Punjab, 144602

I ordered a nike men black and green runallday shoes on 21st july 2019 and the product got delivered on 24th july 2019 but after seeing the product i didn't like the quality and there is a size issue also. Now i want to return those shoes but their is no option shown on myntra app. Then i call their customer care no. And inform them about this same. But they told me right now you can't return this product because you collected myntra insider points regarding this product but by mistake those points were collected. I said them also that please deduct those myntra points which was collected unintentionally and return this product but they denied and said keep the product with you. Now the product is useless for me and those points also are of no use. Please provide some solution about this i'll be thankful to you.