This is typically due to inaccurate IP Geolocation information. There is nothing that the ISP or subscriber can typically do to resolve this themselves. Contacting the streaming service is usually your only bet.
Some services offer the ability to update this yourself but may have limitations for self-help; please see the following links:
For more information on IP Geolocation, refer to this article:
Device Location Services
This can also be caused by having your location services turned off on your device or browser.
Please consult the help documentation for your device and web browser for more assistance.