Bad service

Legit Maponya Mall doesn't prioritise customers and this is not the first time I've been to the store and had to stand in a queue for about 20 minutes or so because there's 1 person at the till while others are standing at the till and chatting. They not even bothered whether there's a long queue or not. Can management look into this even if it means checking CCTV footage because this is unacceptable. If there's a lot of people buying then both tills should be open so that people get assisted quicker.