False advertising

Worst experience at this store, this store posted a picture all over social media and had flyers in store stating if you buy 2 x 440ml packs of Guinness draught cans you receive a Guinness glass, when i went into the store all the staff were unfriendly and the manager gave me attitude whilst trying to assist me he was busy on his phone talking to someone else such pathetic service, he is the manager there but tells me it's not his problem they advertising false information, he explained to me that SAB had printed wrong information. I therefore insisted that it was false advertising and i want my glasses as i bought 4 cases, all he could do is give me 4 glasses, 1 per case. I hope ultra liquor benoni sees this post.