How do I terminate my number in 360Dialog

Only customers can delete their own numbers in 360Dialog.

To do this you log into https://www.360dialog.com/ Select the number you want to terminate. Scroll all the way down to the 'Danger zone'. Cancel your subscription. When you cancel the subscription you have to option to downgrade the number as well. You need to do this to be sure that the number will automatically released.

The number will be disconnected on the last day of each month.

Extra documentation for downgrading: https://docs.360dialog.com/docs/client-hub/downgrade#downgrade-number-process