Complain

I have send an email to Pick n Pay complaints desk on the 25th November regarding a service i have received at the shop, i only received aknowledge email i was told they will get back to me till today, i even resend on the 1st December still not reply. On the 25th i was at Pnp Goodwood branch during my lunch hour, they had a special for the day, i waited in the queue about 5-7 minutes unfortunately their system was offline and there was announcement about it, i did not have a problem with that because they don't control the system, then i went to the Kiosk queue when i got there there queue was also long because the customer that was on the counter also bought things that were on special. I started to panic because I was on lunch and I didn't have things that were on special i went to buy lunch. I decided to look for a supervisor because my lunch was almost over, i found Regina the front line supervisor i waited for her to finish with a customer, when she was done i tried to explain my situation to her, she just ignored me and gave me an attitude her body language was extremely out offline, she left while i was still talking to her and i asked her is she ignoring me and she shouted at me from the 3rd till that she is looking for someone to assist me, i was really disappointed with the treatment i felt so embarrassed because customera were looking at me, i did not expect such treatment from a supervisor that tells the staff about customer service. She was really unprofessional.