Inappropriate customer service

I went to Fourways mall today to collect my card after my online application was successful at 13h20-40. The guy who was assisting me seems like a trainee as he kept on Asking Amanda. Then Amanda requested a sms, I showed her, she then said she's going to collect a card I must wait for her. On her return she said I should take something just to confirm that the card is working. I just grabbed the nearby Tshirt. To my surprise she started helping customers who arrived after me. I was shocked. After 5min I told her I'm on a lunch break and asked if she'd going to help. She said she's almost done. After completing to sign she then said she's done. She didn't bother to ask if I need a plastic. That means I had to carry the t-shirt in my hands. I asked for a plastic she said she thought I'm going to use a shopping bag that I carried groceries. The lady is unprofessional and rude. Her customer service is inappropriate. She's wearing manager/supervisor.