Hi @Craig Campbell thanks for bringing this to our attention. I tried to repo your issue and I didn't face the same issue you shared.
Numbers can be purchased on eligible Azure subscriptions and in geographies where Communication Services is legally eligible to provide them. The capabilities and numbers that are available to you depend on the country that you're operating within, your use case, and the phone number type that you've selected. These capabilities vary by country due to regulatory requirements.To see all the supported billing locations, visit the subscription eligibility page.
If you meet the requirements and are still facing this same issue please let me know.
Best,
Grace