Bad quality

I bought a sissy boy jean worth R700+. After wearing it a few times and maybe 3 washes the bad quality shows. The jean has weakend in the front and looks terrible when I wear it. I've contacted sissy boy and since I bought it at Edgars 3months ago and unable to return because Edgars return policy differs from Sissy boy. They simple said that they cant help me. Sissy boy is the manufacturer not edgars. Sissy boy should own up and make things right.