Disheartening at its peak!

I'm extremely disheartened and unhappy about the service I received at Ackermans Brooklyn store. I was trying to buy a phone for my mother on the 26th of July. At first I was helped by the salesperson who walked me through the phones, explained the different specs to me and gave me their recommendations. We spent quite some time discussing the phones before I pointed out to one that I had settled on. I asked if I could see the demo phone please and someone was called to open the glass door. Her name was Masediba. Upon holding the demo I decided I would buy it, she then went to the back to get the actual phone in the box. It wasn't until they scanned the phone at the till that they realized the phone I wanted was put on the wrong stand (it cost more than the price it was displayed next to) I told her I wanted to buy the phone I spent 15 min looking at with a salesperson at the price that it was displayed at because that was something I'd taken into consideration. She then called her manager Nthabiseng who we then re explained the story to and she told her to call her DSM Andre and they would take it from there. They both spoke to him and once finished Nthabiseng walked away. I waited another 10 minutes and wasn't attended to till I asked Masediba again, what the consensus was. She absentmindedly then said to me "Oh, we'll give you a R200 discount if you still want it" she then continued to question whether I'd seen the correct phone at the right stand or not and I informed her I'd taken a picture to prove it happened in case it turned into a he said, she said. It's frustrating that I could spend so much so much time going over choosing the right phone and for no one to notice it was on the wrong cellphone spec stand and price and then once they noticed because I wanted to buy it then try to gaslight me into thinking I was seeing things and then back paddle once I told them I took pictures and then to be dismissive about it. I wanted to buy the phone at the price it was marked at and don't understand how it's then my fault when they realize they put it on the wrong stand?!