Cancel Peacock Premium?

Is there a way to end the free Peacock Premium I’m getting as a gigabit customer. I didn’t realize it would keep going and was going to just pay for the Ad free tier.

Unfortunately, cause it just kept going and I can’t cancel it myself in any way, I can’t upgrade. I just want to watch it ad free. 

I only have internet and no Flex Box or cable box. None of the guides to cancel it work for me. Is there any other way?