Went to Makro an hour ago was looking for a certain drink that is on special,but got out empty handed

Went to Makro an hour ago was looking for a certain drink that is on special,but got out empty handed.And when I asked one of the guy who worked there he just said no stock and walked away.Wanted to order it online but they charge for delivery. Meaning I wasted money going there,like he did not even bother to say let me go and check but online it says the is stock availability.