I subscribed to Peacock, when realizing you can’t fast forward through commercials, I tried to upgrade, long story short, I have both $4.99 & $9.99 subscriptions. Not fair. I shouldn’t have to pay for both & I have no way to fix this.
Where did you sign up for Peacock Premium, and Peacock Premium Plus? With Peacock directly, or via The Roku Channel?
Signed up in the Roku app
To unsubscribe:
It sounds like you bought an additional subscription when you wanted to upgrade the one you had.
Log into https://my.roku.com/account/subscriptions. Any currently in force subscriptions you've obtained through Roku will be shown there and may be unsubscribed. If you see both Peacock subscriptions, unsubscribe from the one you don't want.
Note that with most (all?) subscriptions you pre-pay (or obtain a temporary free trial) for a defined subscription period. If the subscription hasn't been cancelled by the time the prepaid period runs out it auto-renews at the then-current rate. To keep it from auto-renewing cancel before the prepaid period ends. The current subscription stays active until the prepaid subscription period runs out. (Some free trials will stop immediately.) Few, if any, will cancel immediately and refund the unused portion of your prepaid subscription. This is all explained in the conditions you agree to when you subscribe (you know, all that stuff most of us agree to without actually bothering to read it).