False advertising from Jetstore

I seen Jet store catalogue online a promo take 2 and save promo, I seen the ladies rollneck knitwear Jerseys on the catalogue advertised if you take 2 and save, @R49.99 while stock last and promo on catalogue ends 30 June 2021. I went to Jet store at Forest Hill City , I took two Jerseys and processed to cashier, when I showed her the promo she advised she doesn't know what that is , she called her manager and the manager also didn't know what I was talking about even after I showed her the catalogue etc they refused to sell the Jerseys to me. Jet stores lie and false advertised , this is unacceptable and is wrong according to the consumer Act.