Multiple Order Issues

I had issues with this service more than once:

a. On one occasion, I received a colouring book that I never ordered. I tried to tell them their mistake but no one listened and no one came to collect it. Weeks later, I threw it away. Luckily I had not been charged for that.

b. On a different occasion, a product that I had not ordered was delivered and I was charged for it. I fought about it but no one ever got back to me to collect the product I had not ordered and that I had been charged for.

c. On a third occasion, the app told me a driver was coming from Cape Town to deliver my order in Johannesburg.

d. Today, I was told, which happens more than once, that I would not get the order in sixty minutes as promised. In fact, today, the order is a few hours late. It has not been delivered and I cannot get hold of the call centre. In addition, the time I placed my order keeps changing in the app. How is that possible?