bad service and wrong prices

On my 1 hr lunch i went to game N1 city to buy thing to prepare for the sabbath day,when i got there i saw the 450ml hentjies juices were 89 , i bought 12 of them as i have 3 kids and would also give away others to other kids at Church tomorrow,when i got to the till the cashier told me the juice is not 89 is R809, meaning there should be a 0 BETWEEN 8 &9 .its a misprint.i ask for a manager, she came and couldn't resolve the issue also telling me about the misprint.then call a store manager which after 30min of waiting i was told he already went home and i will need to speak to an Admin Manager Adri Brink who came with her attitude and told me that she wont answer my questions she just came to tell me that i wont be given the juice because they are not 89 but 8.90, i then told her she is even wrong because the juice on the till is R809.she made me look stupid in front of other customers ,trying to raise her voice on me when i asked her to read 89 number.i need this resolved, i dot work for game therefore i wont know if there is a misprint or not, all i wanted was to pay the price i saw on the shelves. Regards Nozipho