Despicable treatment by Zara staff

Yesterday we went to shop at Zara Sandton and picked out two shirts that are exactly the same when we got to the till one of the shirts was marked differently to the other, we enquired as to the price difference the register lady didn’t answer simply took the shirt out of the bag and proceeded to ask for payment when we asked her why the second shirt was missing from the transaction she started shouting about the fact that we can’t have shirts for prices not on tags!!! We called the manager who took all the shirts and disappeared into the back, no one said another word other than to each other in another language so we stood waiting with no explanation - Then the resgister lady asked us to move cause she has to help all the other people in line - SHOUtING so everyone inline could hear her... WOW being shouted at by the staff!!! When we said we would wait as we had also stood in line and didn’t even get an explanation as to what was happening she carried on screaming at us - how embarrassing for an international store... the manager then came back with the shirt with the new price tag ??? How strange / I know that no one at Zara will bother to answer but since when is it acceptable to shout at customers over the inadequacy of the store staff to put prices on items? Since when is it ok not to talk to people respectfully? Since when do you go and spend money to pay these peoples salaries and get abused by staff???? How does this cashier even have a job, and since when is it the norm for the people in charge of this franchise not to care how people are treated??? Disgusting service guess we won’t be back