Tablet returned, but made to feel it was our fault?

So my friend bought my son a tablet on a Sunday morning at Makro and dropped it at our house without checking the contents. Upon opening the package, we saw that the tablet was cracked across the screen and we took it back the very same Sunday. Note that they do close on at 1pm but we nonetheless made a dash and rocked up, the lady checking in the goods took us to the electronics department and we explained our situation and immediately the lady looked at us and said, this has never happened before, and said my Manager will not accept this and return it for a new tablet. The attitude of this young lady was very unprofessional but I kept my cool, she called her Manager and said that because it is the same day, we can return it for a new one. This young lady, obviously very upset, was told that next time she needs to check the package. This was not a problem for us, but when this young lady returned, she looked at both my wife and I - with complete disdain - and in a very rude manner pointed and said YOU GUYS MUST GO STAND IN THE LINE OVER THERE. This was the straw that broke the camel's back, both my wife and I said that this is no way to speak to clients and we were highly upset, I took her name down but I am not going to name and shame on this platform - all I would like to flag is - her attitude to us as people who are returning a phone that was cracked because she never checked it was totally uncalled for. I would like this to be addressed in the bigger Makro space. Please look at how and what you say to clients.