Terrible service provided by ubereatszar

Horrible service they charged me three times on one order and when I emailed them they told me my transaction did not go through whilst the first two time it did the only time it didn't work was the last third charged cause I had insufficient funds in my account never again will I be using this service these people are horrible they took hours to email me back tell me I have an outstanding amount that I already paid for twice I'm very ? ? ? upset