Failed to assist in returning damaged goods

I went to Jet stores on the 24th December to buy my daughter a pair of shoes that she was too wear on the 25th and we got a size 6 then she wore them then they started tearing apart and the bow also was ton so I took them back to the stores on the 26th for an exchange then he said that it was a customer damage and had nothing to do with them and they would not take them back with attitude and the cashier by the name of matshidiso was reading the slip she said that on the slip it was quoted that all goods need to e returned in a good condition only, so I asked the manager Denis as too what should I now do with the shoes because she will definitely not be wearing them again and he said 'I DON'T KNOW AND DON'T CARE' I am very disappointed in the service I received I was also given head office's number to lay a complain but all I need now is an apology from both of them ad for the shoes to be taken back and I be refunded back my money.