Poor customer service.

Poor service delivery at Makro Milnerton. A week a go I bought two leggings for R200 as the special stated. When I went to do an exchange within 7 days, I was told I cannot take any of the other leggings listed for 2 for R200 because this is new stock. Also they didn't have a different size of the one I bought so I could not do an exchange in any case. Firstly how is it a customers fault that items are mixed new and old stick? Secondly all the leggings are under the board that says 2 for R200 yet the lady working there told me it's not all the leggings. I was told to look for stickers and a large number of stickers were lying on the floor. I told them it's not fair to customers and I was not able to exchange my item and ended up with a refund and I really wanted the leggings. The worse part was the fact that every person that spoke to me gave me a different reason why the exchange couldn't be done. Not one person could explain it properly.