Tougheels school shoes faulty

Good morning I'm very disappointed with the quality of school shoes my mum got for my son at arckermans ,spending R500 for a toughees that last only a month,worst the heel falling off ..the name of the shoe called touchheels..I'm very disappointed,worst I have no receipt can't take it back ,I need a solution to this either they would check the day and time on their system..I still have conversations with my son going there with his granny to purchase ..Toughees last for 2 to 3years not 2 months