If the sales person told me about no refund I wouldn't buy

First and surely my last time I set my foot at any shesha stores I bought sneakers buy 1 and get 1 free took 2 hours at Eastgate mall store no one cared to the me there is no refund the sales person who was helping told to come and return if they are small the second day when I went he told me he forgot to tell there is no refund but they don't have sizes all their branches I called their head office they promised they will get back to me till today they don't care