Log into your account at https://my.roku.com/subscriptions to see what subscriptions you have with Roku. While there, you can also check your one-time purchase history at https://my.roku.com/account/purchases.
If your charges don't show up there, and they are indicated as coming from Roku, they are probably from some scammer masquerading as Roku. Challenge them with your credit card or financial institution.
For your own peace of mind, I'd suggest adding a PIN to your Roku account and setting a requirement that pin be entered any time a purchase is authorized.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
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