I'm sorry about the issue. No, that is a scam. Do not call it.
Restart the device, does it work fine now? Or is there still any issue?
What's the model of your device?
Please reply at the box below to continue troubleshooting. Thank you.
That is a fake message; they just want your money; they would pretend to be from Apple, etc. Please always ignore any popup window, or email message or phone call that you do not know or that you are not expecting.
Are you able to use the computer fine now? Or is there any issue?
Please reply at the box below. Thank you.
Also, please note that no legitimate support company nor Apple would ever initiate the contact for any computer support (you would contact a support company yourself first if you have any computer issue.)
If there is still issue with your computer, or if you have any further question, please reply back when you are available, so I can help further. If everything is fine, can you please take a moment to rate my service by clicking on the 5-star icon at the top, then click on Submit when it shows up. Thank you very much,