No Peacock Premium Despite Claiming Xfinity Platinum Reward

In June, when complementary Peacock Premium was taken away, I signed up for the 12 months @ $2.99/month offer. In July, Xfinity Rewards offered free Peacock Premium for Platinum members, and I claimed the reward on the Xfinity Rewards site. When I received the activation email, I clicked the link, and clicked "Activate Now" on the banner that appeared on the Xfinity site. It took me to the Peacock website, and I logged into my Peacock account, followed the prompts and got a confirmation. After completing the process, I got an email that my paid Peacock subscription had been cancelled, but the currently paid month would run until 7/28.  After 7/28, I no longer have access to Peacock Premium content, and my Peacock account shows "No subscription" despite having claimed and activated the reward offer.

After contacting Peacock support (who just directed me to Xfinity support), I contacted Xfinity support, but the Xfinity rep frustratingly kept trying to troubleshoot technical issues with logging in on my end, not seeming to comprehend that it was an account/subscription issue, not a login issue.

This is extremely frustrating, and someone at Xfinity needs to get it sorted out.