I did this for the medical industry. We made robocalls to remind patients of their appointments. We originated the robocalls from a central location, but would

I did this for the medical industry. We made robocalls to remind patients of their appointments. We originated the robocalls from a central location, but would spoof the Caller ID so that it would show the number of the appointment desk of their local medical facility. This way if they called the number on the CID, they would reach an appointment desk with the power to help them reschedule or otherwise.