Support says us-east-2 is not supported for Amazon Pinpoint Voice

I'm using the Amazon Pinpoint SMS and voice v2 API for both text and voice messages. I've set this up in the us-east-2 region. After completing testing with text messages, I asked to be moved from the SMS sandbox to production. This went fine. After completing testing with voice messaging I asked to be moved from the Voice sandbox to production. The response from support was:

At this time the region you are requesting is not available. We apologize for any confusion. We are always working to expand services to >additional regions.

Please check back at a later date to see if this region has become available.

The supported regions are Ap-south 1 (Mumbai); Ap-south east 2 (Sydney); EU-central 1 (Frankfurt); Eu-west 1 (Ireland); US-East 1 ( N. >Virginia); US-west 2 (Oregon)

However this documentation clearly states that 29 regions are supported and that us-east-2 is one of them. In fact, I've already sent several voice messages as a test while in the sandbox--a requirement before you can request to be moved to production. These were sent from us-east-2. I haven't found any documentation that limits support to the 6 regions listed in the response from support. Even the Amazon Pinpoint API states that 13 regions are supported.

I replied back to the support case with the information above, but haven't heard back yet.

Any advice?

Update: I just received the following response from support. Absolutely infuriating:

Unfortunately at this time the region you are requested is not available. We understand that our documentation list states 29 regions are supported, we would like to sincerely apologies for the confusion. We are taking this as a feedback and we are constantly working to expand our available services. Please check back at a later date for this service.