Hi turner111 and welcome to the forums. Bookmark this link for future reference.
Portfolio FAQ (Read Me)
Unfortunately the Portfolio & Behance forums were archived and locked on February 21st. I think it's a stupid decision personally but I don't work for Adobe and thus have no say in the matter. Meanwhile I'll attempt to answer your questions here the best I can.
#1 Adobe Customer Care mainly deals with Creative Cloud billing and activation issues. They CANNOT HELP YOU with Portfolio / Behance matters. So don't waste your time or theirs by going there. For technical problems, submit a ticket through the dedicated Portfolio / Behance help desk below.
https://help.myportfolio.com/
#2 It is true that Portfolio is tied to Behance meaning when you first create your new PF site, it will automatically port your existing Behance content into PF project pages. You can DISABLE the feature by clicking on Manage Pages & Integrations from the left side toolbar. Click the toggle to disable the integration. See link below for more details.
https://help.myportfolio.com/hc/en-us/articles/360019960913-Can-I-disable-the-Behance-Integration-
Post back if you have further questions. And best of luck with your project!