Designer Gucci Shoes

These black leather sandals were worn a few minutes . I bought them and held them to take on to wear for a cruise. I wore them a few minutes but I have a bunion and they hurt. So I tried to return them to the store at Millenian Mall. They said it is too late. I wrote to Gucci headquarters and asked to return them for a store credit. They said , no. So now I am selling them on Poshmark.