Pop up on Safari is telling us to contact Apple Tech Support immediately when opening safari..and my husband did! They asked him to log in to a website and he did that too. However, when they asked for $$ he figured it was a scam.

Pop up on Safari is telling us to contact Apple Tech support immediately by calling a certain number. My husband - who is not very tech savvy - called the number and followed their directions to open a website. However, when asked to pay $$$ he figured it was a scam. How can I check if anything was actually downloaded? I had to force quit safari. When I attempted to re-open Safari, it immediately went back to that page and again, I had to force quit. Suggestions would be appreciated.