Thule Gift Acres Pretoria bad manners

Why is it so that shop assistants busy with a timeous transaction often have not got the courtesy of acknowledging the presence of a waiting customer? Surely this gesture will ease the impatience of a waiting customer. Exactly this happened to me collecting an item at Thule Gift Acres Pretoria on Sunday 28th August. The only shop assistant was busy with a couple, totally engrossed in his engagement with them bluntly ignoring my presence. If I had not paid for the item already, I would have walked off never to return again.