@Seamus21
I'm sorry to hear that you can’t contact Airbnb customer services.
Beside phone call, did you try " live chat " with a CS? ( not an Airbnb bot) and represent your case.
Usually, you will have an answer from them within minutes.
In addition, contact Airbnb via social media Twitter, Facebook for attention with fast respond.
https://community.withairbnb.com/t5/Help/Contact-Airbnb-A-Community-Help-Guide-UPDATED/m-p/413245
Be patience.Hope you can solve it out soon.
Best,