Suspicious pop up saying iPhone is locked and to call a number.

I tried to click into a website for reclaimed wood flooring) and it brought me directly into Apple Music, and then to a website “applecareonline.com” where it put a message in a quite square across my screen:

Your iPhone has been locked due to detected illegal activity. Your apple account has been disabled! Immediately call Apple Support to unlock it!.

I called the number and a man with an accent answered. I immediately felt suspicious because there had been no robot answering machine interface. I’m suspecting this wasn’t really Apple Support? I googled this phone number to see if I could detect a scam but couldn’t find an answer.

Can someone help answer what’s going on? What do I do? Etc.

[Edited by Moderator]

I called the number but I didn’t give any info of mine at all, and I hung up. Does this mean I’m okay? Or can they do something now against me just from having my phone number logged that I called them?

Why did the apple Moderator remove the image that I had attached of the screenshot of the message? And why was the phone number that was listed to call, why was that number erased from my message by the moderator? I thought it might help anyone else who gets that number, to Google that number and find this thread?