Appalling Christmas Day Lunch

On 25.12.22 Christmas Day my family and I were booked for Christmas lunch at Life Grand Cafe Waterfront (Cape Town). I ordered the lamb cutlets and my instructions to the chef was to medium to rare but no blood. Upon receiving my meal I didn't allow the waiter to walk away but told him to please return my meal to the kitchen since the blood of the meat was clearly showing. After a long wait my meal arrived . By this time I was starving and tucked into my first chop ,the taste revolting but downed it anyway since I needed to eat .The 4 lamb cutlets completely burned . I didn't at first realize how badly burned it was until I turned the cutlets on the other side. I asked the I decided not to pursue another and asked for the takeaway waiter for a takeaway box . My son ordered crumbed hake- when we inspected the fish it was old and very distasteful. He had one bite and left the meal and called for a takeaway box as well. My daughter ordered a fillet steak and also asked for a takeaway box. I didn't want to cause a scene on the day since we were surrounded with other guests and decided to call at 7pm the same day. No answer at the restaurant and left the matter for the next day. The following morning I called and left a message for the manager to return my call. The manager whose name is Ash called and I informed him of the most disgusting meal we all had . He apologized for the bad meal. I forwarded him pictures of the fish and cutlets as proof of its disgusting presentation. Ash came back to me saying that he spoke to the authorities and that they were going to send me a voucher to make up for the incident. 5 days later I still didn't hear from Ash or any other staff of Life Grand. I then sent a WhatsApp text 30.12.22 informing him its been a few days since I haven't heard word from him and that I wasn't going to leave matters as they were. He rep**** that the voucher takes processing and they are at the busiest season but that I am welcome to come and enjoy a meal anytime after the 3.1.23 . I informed him that they got paid a full price for their bad meal and that both me and my son had no Christmas lunch due to their poorly presented meals and refused to have another meal at their restaurant and would prefer to have a voucher to be spent elsewhere. The text was read and I have all communication on my phone as proof. To date Ash has not responded. There doesn't appear to be an email address however the contact details are ***. The bill my daughter paid without the tip came to R1.980.00 and worse scenario I was forced to cook a Christmas day lunch for my family the next day. This experience has left a bitter taste in my mouth for Grand Life Café and I will never again visit nor promote the place. In view of the above I am most dissatisfied at the way my complaint was handled. Very poorly done indeed.