Terrible service

I went to Sportscene on the 22nd of Feb 2019 to return 2x All star sneakers (low white sneaker). Only one was able to be credited back to my account, see receipt attached. The other shoe I took back because the online people said the shoe was returned already by mistake and I must take the shoe back to them. I phoned Foschini and a courier was sent to fetch the shoe costing R649.95 to be credited back into my account. I realised the shoe I left in store with the credit note was not reflecting as returned in my account so I phoned and spoke to Angelique. She referred the matter to Chanelle who was there on Monday, 25 Feb 2019. The matter was not resolved and we went to Dylan on Saturday, 02 mar 2019. He was rude and did not want to admit that the store made a mistake in returning the wrong she. He reversed the return whose slip is attached without my permission. I have one shoe but I need the other shoe credited.