Hi @Sharon188,
Welcome to the Community Center! It would help us to help you if you could give us a bit more information about your question - which Instant Book promotion are you referring to? What is the refund for the properties you manage due to?
It may be worth you contacting Airbnb support about this question - this Community Help Guide explains the best ways to contact them.
Just to let you know, I have moved your post here to a new thread so it doesn't get lost in another discussion and it is easier to find. I have also given it a title, please let me know if you would like to change it!
Kirstie