@Laurie591
If a host cancels a reservation before check-in, then the guest is refunded.
But when it comes to assistance for rebooking: it depends on the situation and what is available, but Airbnb can refuse to pay the extra money in case of a more expensive booking:
https://www.airbnb.com/help/article/2868 says:
"As part of providing rebooking assistance we may, but are not obligated to, pay for or contribute to the cost of new accommodations. We may also provide guests with the option of applying the value of a canceled reservation to new accommodations, or of receiving travel credit, in lieu of getting a cash refund."
But of course Customer Service should do a better job here, the least what they can do is keep you informed about their progress on your case.