Not able to fix Gold Earrings costing R1300

I bought a pair of gold earrings/Hoops last year February and the locker on one of the earrings broke. I visited the shop in January to report the matter and they advised me to bring them back so that they can send them to their workshop. I went again in July with the earrings and I was told they cannot fix the earrings because they were hollow. I spent R1300 on the earrings and expected to use them for a while longer than less than a year, this is totally not acceptable I need a replacement /compensation