Game Cape Gate - horrible customer service

On Friday, 1 July, we were treated horribly by Julika Jansen who works at Game Cape Gate. I'm not sure what her title is at Game, but she assisted us in getting credit back due to a promotion error. We bought a vacuum on 29 June on promotion for R1000, as well as two 20kg adjustable dumbell sets. When we got home, the one 1.25kg plate was missing from one of the dumbell sets. Also, we realised the price of the vacuum was R1400 and not R1000. So the promotion didn't go off. We went back on 30 June to get the missing plate, which was an easy process as the guy who assisted us just checked the receipt and gave it to us. However, when we asked for the R400 credit back, the woman who assisted us said that the promotion only starts on 1July. We saw that it does indeed say it only starts on 1 July, however, we did not see it as it was so small and why was it put up so early if the promotion only starts later in the week? Also, there were two Game employees with us when we bought the vacuum - they didn't inform us that the promotion only starts on Friday, knowing that we were under the impression that it had already started. We were told on 30 June to come back on 1 July to get the credit back. We then went back to Game on 1 July. This is when Julika was called to authorise the transaction. She was very condescending and unprofessional. We told her that the promotion sticker was put up too early, but she condescendingly said that it has a date on it and we should be happy we're getting the credit back. I wouldn't be complaining on HelloPeter for no reason. If Julika said all those things in a nice way, it would be okay. But she didn't. She was very condescending and acted out of line and treated us as though she is superior to us. If she is the manager there, it is very shocking. And maybe that would explain why we had an issue with the dumbell set as well. Poor management leads to issues on the floor with employees. We got the credit back at the end of the day, but it cost us three trips, and we all know petrol is very expensive at the moment. And we were treated horribly. I don't like complaining, but if these types of things don't get reported, it can't be resolved. And Game Cape Gate definitely won't be seeing us again.