I had an issue today that required me to uninstall and reinstall. There was a minor issue and, using another computer, a chat assistant help box asked me to provide phone number for support. I received a call and they asked me to connect to iexplorere www.support12345.com. The tech explained it was a secure server to diagnose my computer.
Is this legitimate? I didn't do it.
You were right in not to connect to that website. That is not a legitimate Symantec support site.
We off chat assistance pop ups only on www.norton.com and only for sales and renewals. Did you get a case number? If so you could contact our support with that case number or post it here and we can / could look into it.
Matt