Is github the correct channel to report a billing issue? I would assume github is a place where you report issues with the github project. When there's a billing problem, there are usually different lines of support.
For example, chatgpt when asked "How to report a billing issue with Anthropic subscription?" says:
Best way: Use Claude’s built-in support
Log in to your Claude account at Anthropic / Claude.ai
Click your initials or name in the lower-left corner
Select “Get help”
Use the support messenger to describe your billing issue (duplicate charge, failed renewal, refund request, missing credits, invoice issue, etc.)
For example, chatgpt when asked "How to report a billing issue with Anthropic subscription?" says:
Best way: Use Claude’s built-in support Log in to your Claude account at Anthropic / Claude.ai Click your initials or name in the lower-left corner Select “Get help” Use the support messenger to describe your billing issue (duplicate charge, failed renewal, refund request, missing credits, invoice issue, etc.)