사용자 간 모바일 디바이스 또는 컴퓨터로 실시간 음성 또는 영상 통신
Hi there, 한길! This is Marc. Thanks for reaching out to the community.
Microsoft’s policy generally states that Skype credit is non-refundable, there are exceptions in certain cases, particularly if the credit hasn’t been used recently. You can find the official refund policy here for reference: https://support.microsoft.com/ko-KR/skype/can-i-get-a-refund-from-skype-1cf8ad1a-9b83-46b0-989f-8605c1ee9e09.
To request a refund, go to https://support.skype.com, sign in with your Skype or Microsoft account, and navigate to Billing & Payments > Refunds. Include the details you provided here, your account email and the amount of unused credit and explain your situation briefly. The Skype support team will review your request and let you know if a refund can be issued.
Let me know if this helps, or if you need further assistance.
Best regards,