Bad service and attitude!!!

I don't know where to start,the rudeness and poor service by the staff disgusting. Today I went to Ackermans central city as the was a special of 3 tees for 70 rands I said it's a good deal let me take 6 instead. When I got to till the price said R230 instead if R140,when I asked the cashier he said he doesn't know it's like that. I explained to him that it was from the sale,he then calls the manager she then says to me it's not her problem the system didn't give a discount and see nothing she can do. I explain to her the very same thing and she says I should show her exactly were they were and by the way they are at the front next to the door. She then tells me only the top part it's for the special but yet they've put a 3 stack table of toddler's tees. According to her I was supposed to figure out which t shirts were on special and those that are not.. and she voided the three t shirts that were not in special. ****ed as HELL!!!!!!