There is no charge for Roku. Call credit card or bank and dispute the charges. Nothing Roku can do for you. Did you pay to activate your Roku? If you paid to activate your Roku you were a victim of a scam. Try to find out where your payment is going.
We do apologize for the inconvenience this has caused you.
It looks like you were in recent contact with our Support team. We would recommend continuing to work with them to resolve the issue you are experiencing as they would best be able to assist you moving forward.