FALSE ADVERTI*****T

so disappointed at the shop RFO Store in vereeniging, i wanted to buy a sweater at the advertised prices, when i got to the till the price for the sweater had gone up. The shop assists couldn’t sell it at the advertised price. Where are my consumer rights????? This is unacceptable!!!! I want to purchase goods as advertised not be disappointed when i have to pay 😞😡