Hello @SheilaC and a very warm welcome to the Community Forum. I am very sorry to hear of your cancellations, can I ask, did you do video calls with the sitters before confirming the sits and were they new to sitting or did they have previous reviews?
As @Cuttlefish mentioned, if you could add your TrustedHousesitters profile on to your Forum profile by following the attached link, that would be very helpful. This will then enable others to offer you helpful advice and feedback and will also give your listing extra exposure.
If you are unsure how to do this, or if you have any questions at all, do not hesitate to ask, we are all more than happy to help.