Clicks retail

I will never ever buy from this retailer again. Rude staff and not assisting one. I bought 3 pairs of the same spectacles. When I got to my car I realised one pair is a different rating and I took it from the same shelf. I returned to the store to exchange, to make a long story short the cashier did not want to assist so I rather walked out broke the glasses as I am not in the mood for this incompetence. I will however never buy again from this retailer ss I do with others like Dischem for example. This is a matter of principle.