FALSE ADVERTISING AT TFG STORES

TFG false advertising!So TFG is always advertising these amazing "buy 1 get 1 free" deals!Which seems like such an amazing offer. So this past "black Friday" I go to the store and shop shop shop because its "buy 1 get 1 free" but when i get to the till i'm charged a whopping R1600 and not what i expected to pay. I go home and analyse my slip and calculate what i am charged only to find that is is not buy 1 get 1 free!!!!Instead they give a 30-35% discount on each item purchased!Seriously false advertising. Eg. I buy two shorts for my son each priced R80 so according to the promotion i should be charged R80 and the other should be free instead i am charged R52 for each shorts which means im paying R104 and not paying for 1 item and getting the other free. I go to the store the next day to query and i cannot get an answer. But the buy 1 get 1 free signs are advertised all over the store. This is 100% false advertising i am really unhappy and disappointed. This is not good business practise.