I booked and paid Rover for 5 nights--December 18, 19, 20, 21,22. Unfortunately, Bailey had to work on December 20 and 22. How do I get a credit on my credit card?

The sitter or you should have modified the booking so you would get a timely refund. However, Rover support can modify the booking for you just give them a call at [Edit: Rover’s contact options have changed. Visit the Rover Help Center at https://support.rover.com/ to find the phone number, help articles, or chat with the team]