I understand you'd like to request a refund for your Spine Pro license. Since you've already emailed contact@esotericsoftware.com, that's the correct way to handle this - account and refund issues need to be discussed privately via email rather than on public channels.
Please be patient as the team works through their emails. Response times can vary, especially around weekends or holidays. They will respond to your refund request as soon as possible.
If you haven't received a response after a reasonable time, you may want to check your spam folder to make sure their reply didn't end up there. The team will definitely get back to you about your refund request.