Bad service

Hi I received such a bad service from Mr Price Boitumelo junction, after waiting in a long queue, when I got to the till, the lady who was assisting me called Roxy to get the price of the shoes, the lady came after sometime and had attitude, I was told to stand aside while other customers were helped I did that, and after a long time as the lady at the till called Roxy, she then told me she cannot get the code for the shoes, and the lady in the next till said the shoes are old they dont have a code, that is were I asked why did they make me wait if they knew, the Roxy lady is very rude I dont think I will go to the store again.

My question was why would the store put items that one cannot buy because it's just a waste of time for customers, very bad experience