Disgusting

A week ago i purchased a pack of chicken cheese burgers from pnp at brigh****er commons,today i opened the pack to prepare for,my daughters lunch for school and i was disgusted with the green mould that i saw on the burger,however i could not return it as i dont have the till slip,i have wrapped it back up n put it in the freezer to show pnp what they are stocking,surprisingly the expiry date is 2018 and the stuff is moulded.not impressed