Checkers Emmarentia 60/60 Useless

I placed an order today on the Checkers 60 60 app at 11:39 with expected delivery 4 to5pm . I received a message to say the order was going to be picked after 4:30. All of a sudden, my ordering time on the app changed to 4:39pm for delivery tommorow 01 July 11 to 12 noon. No explanation, no phone call. I don't know if it's the service at Checkers Emmarentia or that the 60/60 service is a gimmick. I was waiting for the order as it was part of my supper cooking plan. My call on the help line went unanswered. DISAPPOINTED