My guest made a double booking with IB for tomorrow night

[Mina50]

My guest made a double booking with IB for tomorrow night after I recommended my other listing after notifying him something was wrong with the current room. I cannot cancel the first reservation online and I cannot get through to AirBnb customer service. Is there something I can do here? My guest will be charged if he cancels and the number shown here after I click cancel reservation doesn't work in the UK:

 It’s too late to cancel online. If you need to continue with your cancellation, please call us at:1-855-424-7262 

[Emiel1]

hello @Mina50 ,

As a host you should have changed the first reservation to the other room:

https://www.airbnb.com/help/article/50/i-m-a-host--how-do-i-make-a-change-to-a-confirmed-reservation

(instead of advising the guest to book the other room, because the initial room was not ready ! ) 

The UK phone number is in here: Contact Airbnb - A Community Help Guide [UPDATED] 

Best regards, Emiel