Complain disrespected by the assistant store manager Dischem Rynfield

Bad attitude, disrespect poor customer service by Rynfield Dis-chem assistant store manager Lezane Matthysen I went to Dis-Chem to buy toiletries and I saw Garniner pure active 3 in 1 charcoal on 25% and under the product there was a price tag with the same description priced R74.95 and I took it and payed for it together with other things and when I was about to go out I checked my slip only to find that the price changed to R89.95 and I asked assistant from the personnel he came check and he said the description is right but the barcode is not the same on the product and he said let me call someone who works on that section and he came with a guy who happens to be the manager and he told me there is nothing he can do I should read the barcode on the product and I told him I will not do that since I don't work there and is not my problem if they put a wrong price under a wrong product I should pay what I see after that he told me that he can give me my money back if I don't want the product because is my problem of not reading the barcode I asked him of his policy in case like this he couldn't answer me. He is so unprofessional and disrespectful and rude