@Tony1571
Useally a booking is final. The host is responsible for setting up the right pricing in the listing.
unless there is a technical error (to be investigated by Airbnb).
If you decline, you risk the host will cancel the reservation (You will have full refund, but the host will be penalised). I would certainly not accept. The host should make more clear what went wrong.
If it is simply stupidity from the host side (not updated listing with correct prices), then contact Airbnb about behaviour of the host and how it can be resolved.