Castbox has a zero tolerance policy for inappropriate comments. If you see any, simply tap the "three vertical lines" button under the comment and select the "Report issues". Four reasons there: Unwanted commercial content or spam; Pornography or sexually explicit material; Hate speech or graphic violence; Harassment or bullying. 

The Castbox team will review every reported comment and will try to remove offensive comments as soon as possible.

To report a channel, please tap the "three vertical dots" on the top right corner in Channel Info page and choose Report Issues, then you could select the reasons as shown below.