Checkers Sixty60 App

I'm am so unimpressed with the app. I put a few things that I needed for a meal and a few other items for my daughter as she is in matric and writing trials from tomorrow. I placed my order and some off the items did not stay in my cart. I received my order now and I'm missing so many items and am not prepared to pay for delivery again. The app has glitches and is slow.