Nando's Bad customer service

On the 29th June 2020 my family and I bought a chicken platter from Nando's Campus Square which was delivered on time and seemed good

We had the meal with no problem but shortly after 2 of us started feeling sick. Later that evening it was all of us until the next morning. I reported it to them on their Talk2Nandos Twitter account on the 30th June and they said they would look into it and took my details. Later that evening I received an sms from them, actually 4 smses reading as follows ;

"Your Nandos Customer Care case CAS-421624-B9G8S1 was resolved by Phumla Okeke. Regards, the Nandos Customer Care Team."

I had not spoken to anyone so I don't understand how Phumla Okeke resolved my case. You take my details, make empty promises and generate a reference number and resolved it without any conversation with the customer.. How is that customer service??