False advertising

I bought 3 DVDs on saterday. One missing DVD and the other one did not work so took them back. As I walked to take 2 others DVD in there place. I was approached by one of the sales guys. He asked me if there was something he could help me with, so told he I interested in speakers for my TV. He showed me 1 or 2 small speakers, en then showed me n nice 5.1 LG system he immediately told me he can give this system for R450,I then only saw the price is R599, I then went to the DVD players. I have been looking for a Blu Ray player for a while now. Though it will go nice with the speakers. Saw a Samsung Blu Ray player for R599, sale guy then told me he will give me both for R1000. I rep**** ok sweat deal. I also took 6 Blu Ray DVDs. Got at the counter and in Desember at the same shop they gave me a discount voucher of 25% off any purchase. This voucher expires on the 28/02/2018 so I decided to use it. Were the lady at the till told me. She can't give me discount times 2. Next thing the owner is standing in front of me. Telling me same thing and said. He is now losing because but is below the cost price...... We I took my replacement DVDs I walked in with and put the discount voucher on the counter and walked out.....I did not ask for discount on the items in the first place....false advertising I would say.