Platinum account unable to get free peacock premium?

i received an email from xfinity a week ago saying i was a platinum member now. one of the included discounts is "Peacock Premium on us". i tried to add the service on the website and there's no way to do it. i went through several help topics clicking through links, and the option is never available/to be found. i opened a chat and explained the situation and they were unable to resolve and said i had to call. against my want for sanity i just called and was on the phone for 29 minutes being bombarded with cell phone offers all while saying i just want the Peacock service i'm owed. he("Jack") said he had no way to add it to my account. how are you supposed to get the discount/free Peacock?