I have used many shopping sites but the one which I would recommend for everyone would be Myntra.
These guys got the best listing and the best deal for you. They are on top of the pricing and they do a good job.
Once I bought a jeans in this and it happened that I got a wrong and I contacted Myntra through email.
And I didn’t check after that, then I got a call from one person, then that person was out of my door to pick up the product. It was done very fast to my knowledge. I got a free gift along with that product, when I returned it that guy told me to keep the free gift. It was like I hit the lottery.
Then again ordered another one, that was the correct size and I got another gift.
I think it was my lucky day. But I haven’t had any problem with them till now.