Woodmead Retail staff - rude and unprofessional

I wish to complain about the behavior of the staff at the Woodmead Retail branch, I returned a charger on Friday 29/10/2021 that I bought Thursday 29/10/2021(with a slip & original packaging), they refuse to return the goods stating we used it and that the supplier needs to approve the return. Being very angry I made a big fuss, but as we left the store the staff in the store laughed & mocked us - clearly a victory cheer. I find this offensive & unprofessional. I then tried tried calling call centres, facebook & instagram. the person at the instagram page did not want to introduce themselves & kept referring me back to the store. The same store that coursed the upset in the first place.

Correct me if I am wrong, but CPA allows for returns of goods within 7 working days, no questions asked.

I am now considering perhaps emailing one of the Directors of the Vodacom Group to see if he or she will be willing to step up or are they also taking the proudly South African attitude by passing the buck or perhaps the most famous one "we don't care & it's not my job".