Need to Remove free Peacock Premium plan from Xfinity - Please Help

I used to have a Peacock Premium Plus account that I enrolled in directly with peacocktv.com.  It was the no-ad plan, and it was great.

Unfortunately, I signed up for the free Peacock Premium account offer from Xfinity.  Afterward, I found out it is not possible to add the “Plus” portion to the free Xfinity Premium plan.

I want to downgrade/cancel the free Peacock Premium account that is linked to Xfinity.  Like other customers, I have not found a way to do this.  I go back and forth between Peacock & Xfinity trying all the instructions they give, and nothing works.

What can I do to remove my Peacock account from Xfinity?  I want it to be canceled so that I can go back to my original paid account directly with Peacock. 

I should have kept the paid account I had directly with Peacock.  Please Help! Thank you in advance