Where do I send a legal demand?

All subpoenas issued in civil cases must be served on Windstream’s registered agent for service of process, Registered Agent Solutions, Inc. (RASi). RASi is authorized to accept subpoenas on behalf of any Windstream entity registered to do business by the secretaries of state. You may visit your Secretary of State website for more information. You may also contact RASi at 1-888-705-7274 or visit their website at https://www.rasi.com.
this is the content