False marketing strategy (invalid discount vouchers)

People, I’m not happy with this company false and invalid marketing strategy, they would advertise discounts vouchers and even send you marketing emails and pop ups messages on the app informing you about their discounts vouchers when you buy any products to the value of over R500 when you are interested and finally decided to use it. You would get a message that says it expired the very same day it was advertised, this happened 5 times early on this year and the time it was rugby winning and now again when it was jingle100 this is not fair and frustrating. I’m a loyal customer of this company but they are using false marketing strategies to get more customers. I’m upset.