Myntra.com — received defective product

I have ordered crew street men navy blue sneakers (Size 7) and i received it on 3rd march, 2019.
Though the quality of the sneakers was not good, i decided to keep it and start wearing.
In two days, from toe end the pasting of the shoes plucked up.
Such a poor quality shoes they provide.
And the irony is that i have ordered another pair of allen cooper same time.
And when it delivered, i checked it before wearing, its pasting also rooted up from toe end.
This is my first experience with myntra.
Very bad.
Please take your crew street shoes and refund my money as i am not able to return it from your website.