-In SF got shouted at because I calculated wrong the tip
-Seoul a driver told me I owed him 10x what was agreed with other drivers joining in (scary)
-In Lisbon the famous "this restaurant is closed today I will take you to another one" (from what I understood they get commission) got me twice
-Barcelona the driver "hid" a high bill and told me I gave him 5€ bill instead (I showed him the receipt from the ATM where I just took the money before paying him since his machine "did not work")
Since ride sharing apps became a thing? Way fewer problems and a way for me to influence positively/negatively a ride.