Ajio — Shoes order for 7uk size but received 9szie uk

I order a shoes of 7size uk but received the size of 9uk AJIO is saying i am the one who has selected the size 9 only it's not their mistake but its not my mistake on the screen still i can prove that i have selected the size of 7uk but they are not ready to do anything on this matter they stick to that from my side only i have selected the size 9... this is how AJIO is doing and solving the problem of the customer by saying we can't do anything...i am sending you the screenshot of the order and i have selected size 7uk.