Terrible after sales service

Worst client support service ever! I received an email advert for a R75 voucher, which is the only reason I ordered from UberEats last night. I went on the app, ordered what I wanted and by mistake placed the order before putting in the voucher code. I then IMMEDIATELY cancelled the order and messaged the support team explaining. The attitude of the person who I dealt with (Mu) was pretty much sorry for you the restaurant started the order so tough luck. I was really appalled considering I cancelled within SECONDS of placing the order! I was busy writing to him and he just signed off. I then wrote a complaint via in app support and am still waiting for a response... So, customers beware, if you make a mistake on the app you WILL pay for the order and have no recourse!!!