Shocking management conduct

I am actually flabbergasted as I write this complaint about Tekkie Town Alberton City, what a dismal store with a dismal store manager and Area Manager who both have no customer service training what so ever. I bought a shoe last weekend at R400, at the till it was rang up as R350 and when I got home there was another tag on the shoe for R250, I sent the shoe back on Sunday and told them I wanted the Shoe with this correct price that is on the shoe itself, the refund process was dismal since I paid using pay just now, the store fumbled the refund then took my details and told me to leave the shoe they will phone me back and I also confirmed that I will also phone should the refund reflect in my pay just now wallet. I kept checking my pay just now wallet and nothing came through, I phoned the store on Wednesday since they did not bother to phone me.... Needless to say when I phoned I discovered that the girl that helped me dismally on Sunday was also the store manager, she was rude to the core I had to ask for her area manager Dennis Mkhonto who confirmed that Lerato was a dismal manager but unfortunately he found her at the store, he promised to assist me till my query was resolved but he kept making excuses claiming that they are not fami**** with pay just now which I responded that it was their responsibility to fami****ise themselves with this app since it's something they used at the store, he promised to phone me back in 30 minutes which he didn't and only phoned me later in the day and told me that they will continue to investigate so I get assisted.... Then nothing from there. Today it's Friday and neither him or the store manager have contacted me since so I sent him a message asking him why I have not been contacted till now, he phoned me and told me that I need to handle this myself because they don't have the know how of pay just now so I must just see to finish which I responded that now I see where Lerato gets her customer service from and he told me he is now insulted and he is going to hang up on me which he did.... WOW 😲.... I am shocked... I messaged him and told him that I will not leave this matter... Personally I hate incompetence when we have such high unemployment rate in SA and there are people who are just seat warmers and can tell clients where to shove off... It's beyond unacceptable. I lodged a complaint on Google Maps and tekkie town responded to say I must leave my details and they will contact me... Which no one has contacted me yet... I take it this is the level of service they provide to the customers hence their management is beyond rotten... salary collectors and nothing more. It was my first time buying from them and definitely the last.