There are services to do automated calls that are much cheaper than $15/call (like https://www.remindercall.com https://www.remindercall.com, no affiliation). I

There are services to do automated calls that are much cheaper than $15/call (like https://www.remindercall.com https://www.remindercall.com, no affiliation). I'm curious why you used magic for that task.