Uber Eats has the worst support system

I don't see why we should have to tick a star. We should be able to give no stars. This isn't the first time i had an issue with uber eats and I am sure it won't be the last. It is impossible to contact them and get any support. That's the most frustrating thing about the app. I am unable to use the app because the driver cancelled the order however he did deliver and i paid cash. I now cannot make any further orders as it shows i didn't pay but there isnt a single person or support that i can get from uber to hello rectify this problem. They are terrible. I use Mr D daily and their response is amazing and i haven't had a problem once.