Unprofessional Service

I recently did an online purchase from Woolworths. The reason for the online purchase was to save me time. The item did arrive on time but it was the incorrect item. They did explain that items was on sale. However, I then took it to the Bayside Branch to get the item exchanged. I waiting 1 hour at the store and the problem was not resolved. When I phoned them they mentioned that they had 3 pair of shoes available. When I arrive an hour later they only had 3 shoes on the shelf. Then the lady Angela behind the counter could not assist me because she had no access to the online system. The online system was to save me time it took me running to 2 Woolworth store and phoning around trying to get the online system to assist me, also phone various Woolworth store to check if they had the item. Very disappointed.