We are currently aware of a problem where the Datto Support phones will ring once and then disconnect.
Our Engineering team is aware of the problem and actively investigating the root-cause
Currently, there is no ETA on when the Datto Support phone system will be restored.
Please bear in mind that you can still utilize the Support Chat function to raise a ticket with our Support team or engage on existing tickets.
You can monitor the current status of this issue at https://status.datto.com/