Poor and Bad service

Hi I recently bought a food processor that is not working Mr Price home Liberty Midlands Mall PMB. I lost my slip however I made a card payment. Upon returning the food processor I explained my situation and the matter was referred to Natalie Minkle who is area manager. She then stated to her manger Camila that they won't be able to help me. I need some assistance as to get my money back. They cannot just rob people.