Nandos refuse to contact me - COVID Breach

Three weeks ago I visited the Mall @Reds branch. I ordered three meals at the drive through. Upon reaching the window to pay - I noticed that three to four staff members, including the person packing my meal were not wearing face masks (I took pictures as evidence). I called for the manager and asked her to rectify the situation. Upon reaching home - I noticed that all of my meal orders were incorrect (including instances of the restaurant not excluding items I am allergic to). I called Customer Care and logged a compliant. The Manager of the store (Joseph) called me a few days later and apologised. He indicated that the mask issue was dealt with via a disciplinary process. I asked him if I should keep the meals - i.e. if they wanted to collect them as I had not eaten them. Joseph indicated that I could dispose of the items. I subsequently gave them to underprivileged persons at a traffic light. He also told me to ask for him when I return to the store so that he can refund my order. Yesterday, before visiting the store again - I called Joseph on the landline (as he gave me an incorrect cell number) and told him of my intention to come through. I visited the store - I placed my order and called for Joseph to refund the sum of my previous order, and for me to pay the difference. Joseph came and told me he cannot refund my order as we agreed and that he would give me the same meals I previously ordered. I did not want the same meal. He told me he would speak to his manager and revert. He came back and said he will not refund me. I paid for my order in full and asked Joseph for the name of his manager and the franchisee to escalate the matter. Joseph refused to give me their names or contact details (I have this on a voice recording). When I reached home - my order was again incorrect and looked like a "dogs meal". I have pictures of this.

Second compliant about this as my first complaint was ignored by Nandos - i.e. no response.