Store manager keeps mislabeled (*****ulent?) stock on shelf

I bought a 1lt bottle of Bains Whisky on a "special" at Pick 'n Pay's liquor store at Willowbridge in October. When I got home, I noticed the bottle was the same size as the almost empty bottle I was replacing. When I checked, the bottle was labelled 1lt but it was actually a 750ml bottle. I returned the bottle to the store. The manager merely shrugged and said they had reported it to the supplier, to no avail. They had not removed the problematic bottles from their shelves, however! I subsequently tried addressing this with the supplier, Heineken Beverages. You can read about that unhappy experience in another review.