Complain boxer liquor sharpeville

Today was literally my first time buying at boxer and the service was terrible. Boxer liquor sharpeville. I went there to buy the specials I saw online and when I get there, they didn't have stock on certain ciders. When I decide to buy something else which they have in stock, the price tag is written something that doesn't match what I saw when I got to the til. We were assisted by the security gaurdthroughout. The cashier was very rude telling us to hurry up she wants to leave yet the shop closes at 6 and we were at the till by 5:30. When we realize the bill is more that what we had calculated from seeing the price tag, she said we should just pay because she doesn't understand why the price is higher. We then asked her to call her manager and he was called. Sadly you'd swear the manager was a security guard and the security gaurd is the store manager, he did not have time to talk to us whatsoever and said he didn't know who put the price tags. The security guard instead tried to bring understanding saying maybe there was a typing error because the shop doesn't have those ml's anyway and asked if we would still like to purchase or should he take them back. All this happens in the absence of the manager!!!! He just left us there. I did not get the manager's name, the cashier did not have a name tag on so the one on the slip is Maditaba Makgalanyan. It was my first time at boxer, and probably the last time! We don't even get such serve from street vendors!