GATEWAYS BRANCH RECEIVING LADY NOT KNOWING WHAT THEY DOING

I just went to the gateway Umhlanga branch, I was booked in and I said I'm just popping to dischem as there's 3 people Infront of me, I was back in less than 5 minutes, I then waited my WHOLE lunch break , once I saw other people being assisted that CAME AFTER ME, I asked the lady at the counter and she stated I stepped out, WHY DONT THEY INFORM US YOU NEED TO SAY YOU ARE BACK???? Last time I popped out and back in, and my name was called, WITHOUT me stating I'm back, WHAT THE HELL IS GOING ON WITH YOUR STAFF THERE, I am fuming! Lunch break wasted, petrol wasted, even paid for parking with the only conclusion of me getting mad! I was just there to get a u count card and give my lease agreement!