False Advertising

This morning 21 September I went onto the app and saw that the stove that was in my basket was R3399 and it was R3499 yesterday So I bought that and dog food but when I've paid etv I didn't realize the price but when I've received the email I saw I paid R3499 when I went on the app again I saw bit it was R3399 so I am really disappointed as this is false advertising.