Thanks for reaching out to us, container team may help make additional voices from public cloud available in containers as required.
Please send me an e-mail with the request stating the gating application you were approved on, expected volume and deployment timeline and we can check what a feasible ETA is to Azcommunity@microsoft.com with title ATTN:Yutong
For billing problem, please check on the pricing page - https://azure.microsoft.com/en-us/pricing/details/cognitive-services/speech-services/
It will be more exact if you leverage the calculator - https://azure.microsoft.com/en-us/pricing/calculator/?service=cognitive-services
If you want to discuss more about the commitment tier and pricing, I will suggest contacting sales team for more details.
I hope this helps, please let me know if you need more information.
Regards, Yutong
-Please kindly accept the answer and vote yes if you feel helpful to support the community, thanks a lot.