If it is a long-distance or toll-free number, ensure you dial “1” before the area code when dialing the number.
To ensure it is not an issue with the destination/number, try calling the number using a different device or cell phone.
If you can confirm that there is no issue with the destination/number –
- Record the date and time of your call
- The extension used
- The format of the number being called (+1, 1)
- The destination number (area code included) & Country the number is in
- Any error messages received