Substandard service at KFC Sasol Zebetiela North

On 17 April 2025 at 13:44 I was at KFC Sasol Zebetiela North on the N1 in Limpopo. I placed an order on the kiosk and opted for a digital receipt, of which I have received via sms, the sms even had a link to download the receipt. I waited for my order as I kept checking the screen to see when my order is ready so I could collect. As soon as when my number appeared on those that were ready I went forward for collection and that's where dissatisfaction started. An employee of KFC with the name Grace was the one issuing out the orders as customers were coming fourth to collect. For some reason not known to me she chose not serve me or rather ignore me and attend the person who came after me, of whom his order was not even ready yet. After she told that customer that his order was not ready yet, I then presented my phone to her (Grace) for her to confirm my order number which I wanted to collect. She told me she cannot accept the order presented by phone, I should go and get my receipt from the teller as her system was not working. I told her I wasn't going to do that as the kiosk gave an option for digital receipt and I chose that. She insisted that I should go to the teller, despite me having the digital receipt. The teller then came into the middle of the heated argument and showed me a pile of receipts saying I should go search for my receipt there. I told him too that I was not going to so that, I then told him I wanted a refund as their service was sub-standard and I was mistreated. He immediately started looking for my receipt. I finally got my order but I am really not happy with how I was treated. Customer service is at negative.