I bought a brand new pair of Adidas trainers last week for 34.99. Now I've worn them 2 times and the back bottom of them are peeling away. It looks like both sides are almost coming away after 2 days wearing them (No extra-curricular activities, just walking). Picture included.

Do I have a right to complain and ask for a new pair? All my friends in retail say I definitely do. I went to the shop and the Manager said "Adidas would laugh at him" if he tried to return them.

Do I have a case or should I just glue them and put up with it?

Thanks