Debbie Kim is shocked to find a $150 charge from Lyft on her credit card. What did she do — and is there a way to undo it? Q. I was on a 10-minute Lyft ride to my friend’s apartment in Toronto today.

DEAR TRAVEL TROUBLESHOOTER: I was on a 10-minute Lyft ride to my friend’s apartment in Toronto, Ontario, Canada today. Shortly after I arrived, I received a notification from Lyft that it was charging ...