Struggling to get my refund from crocs canal walk

On the 09 April 2025 I bought Croc boots for my son and the boots were tworn when my son was trying to wear them for the first time. On the 25 April 2025 I reported the incident and I was adviced to return them for a full refund. On the 01 May 2025 I returned them and the refund was processed and I was told that since payment was made via PayJustNow it would take 3 working days, after a week I followed up and I was told again that it will take 10 working days. After 2 weeks I called and they could provide me with answers instead they asked for the receipts and a follow up email was sent but still. I emailed their customer care line and I was advised that the matter was escalated to the crocs canal walk and she called me to listen to my complaint but still I have not been refunded. I have communicated with their helpdesk, canal walk staff including the store manager but still not been assisted and I'm not sure what steps to take to get my refund.