Flipkart — replacement and return request getting rejected

I am a flipkart plus member and recently order headphones from your website. Based on the ratings and review, i ordered them. However, i did not find its quality to be very good, the sound quality was not very good and also it was not very comfortable wearing for long. Therefore, i wanted to return the product and buy a little expensive one. However, the site does not allow me to even return the product easily. There are only limited options available for reasoning.
When i placed the return request, it got rejected saying the reason was not valid. Does the customer have no rights to atleast reason the quality and performance of the product and you guys reject it without even listening to it. Now i am only getting the replacement option, so i am doing that right now. However, i want to return the product anyhow.
Please try to help me return the product. It is in the same condition as i opened it with all the packaging intact.