Unable to activate my Peacock account despite several attempts

This is a first post and I'm hoping that someone can help me. I've been trying for over 4 months to activate my free Peacock Premium through my Xfinity account. When I click on the "activate" button on the Xfinity website it transfers me to the peacock site that asks for my email and password. When I put those in and click continue I get the following message. " Your xfinity account is already linked with another peacock account". I have already spent hours on the phone and many more rotating through xfinity assistant trying to resolve this issue. I've seen that others have had this issue and I'm hoping that someone can help me.