Support service is up to zero!

I placed an order on UberEATS, Just after paying and the app was sending my order through that's when I noticed I used my work address and I was at home. I quickly went in to support to try change the address and the response was that it cannot be changed, I requested to cancel the order and all this was at a stage where the tracking was saying "processing order" so it had not been picked up. I called the store to no avail. I do take responsibility for my mistake, my issue is how it was handled by support. firstly even after I made them aware of the issue they refused to assist and later went on to say my order was "delivered", lying. Today I got an email saying I can't be refunded because I complained after 2 days, how? when I sent in a request for help on the day of the incident and the following day as well? now I am getting automated emails saying that I can't be refunded. The support service is just there to tell you to "go throw yourself off a cliff".