POOR QUALITY

I've been a client from Holster South africa for a long time. I've purchased 2 pair of sandles last year. @ R899 a pair. summer was gone winter came and i packed it away. Took it out yesterday morning and i lost 3 stones on 1 sandle during the day. REALLY I CANT WEAR THEM AGAIN. AND HOLSTER SAYS SORRY NEEDS POP AND RECEIPT.!!!! COME ON PEOPLE IS THAT THE SERVICE YOU PEOPLE GIVE TO LOYAL CLIENTS. I NEED AN ANSWER. Magda 08225614363