Hi Lee,
Welcome to Microsoft Community.
I'm Hahn and I'm here to help you with your concern.
I apologize for the inconvenience you're experiencing with your Microsoft Arc Mouse. To obtain service for your Microsoft Art Mouse, please contact Microsoft Support for further assistance and they can guide you through the process of obtaining a replacement mouse, if necessary. Contact Us - Microsoft Support
I hope this helps, and best of luck with your Arc Mouse! If there is anything not clear, please do not hesitate to let me know.
Your Sincerely
Hahn. W - MSFT | Microsoft Community Support Specialist