Apple Care support for your Apple devices and Apple software is free during their working hours. You do not need a valid AppleCare warranty for this service. The AppleCare warranty is for covering damage or loss of your device.
This free service is available for any device for up to seven (7) years from the date it is released.
The number to call is 800-692-7753
When you get connected, simply respond to the first automated question with “Technical support,” or “Billing,” or whatever main topic you need assistance with. Don’t bother going into any detail - that comes later when you start talking to a human.
The next automated voice will then ask you for the name (i.e., MacBook Pro) and serial number of the device you are working with, so have it ready.
If you need assistance after hours, you will need a valid AppleCare warranty for the device. Otherwise, you will be charged for that service.
John R Carter Sr