Bad customer service

am so disappointed with the management of Edgars in Greenstone.

I made a purchase in January, being a shirt and a trouser, unfortunately the items did not fit and I returned them to the shop on the 6th of January.

I then changed my mind that I don't want the items any longer then decided to return them for a refund. I was told I need to have the previous invoice, which I doubt the cashier gave to me. Apparently they checked previous invoice and couldn't find it, how convenient 🙄! So it shows that administrative and filing are problematic. I mean it was only 2 previous days invoice and not 2 months back they had to look up for. I asked the cameras to be rolled at the moment while the exchange was done. The manager told me that the cameras are not so reliable and can be on and off. She was reluctant to go check footage. I insisted that footage should be checked. I waited for a good 45 minutes only to be told that there's no footage for that moment- how convenient!! I needed that money to go buy school shoes for my son at another shop as the one he wanted were expensive at your shop compared to other shops. I was held at ransom to either take a gift voucher. At the end, I was forced to buy the expensive pair at Edgars, whereas I had an option to buy the same thing at a cheaper price. It's now my word against Edgars. I think the staff did want to look for the invoice and the footage is the only thing that can prove that.