"The driver asked me to pay for the drive whether I had already paid. That's genuinely unfortunate since, by the end, I felt like I paid the taxi twice... which was very expensive!"
"Great service, competitive price.
Only one minor negative - having to confirm your taxi by clicking a link in a SMS message 15mins or so before you want to be picked up even though I had pre-scheduled the taxi. What happens if I forget to click the link, would the taxi still arrive?!"