I'll treatment by manager and not putting correct prices on products and poor communication skills by manager and employees

Checkers wonderpark manager lacks management, and communication skills, on Sunday the 20th she humiliated me and my wife by not even greeting us by attacking us and calling security guards and shouting in front of other customers because the product we wanted to buy the price at the shelf did not correspond with the one they scanned at the till, and the cashier ELelwani Tshakafa shouting at my wife was also not acceptable, they accused us of changing prices , and went to check their cameras and were disappointed that we did not change anything, and the manager just said " I am not giving u that product and took it with the shelf price and disappeared leaving us humiliated at the till as if we are **********s due to their mistake, shouting and accusing customers it's not acceptable never setting my foot in that store again,just imagine a reputable couple changing prices in shops and being harrassed in front of other customers because of the mistake and incompetence of the wonderpark checkers management .