We’re sorry you’ve been the victim of abuse. Your Bandcamp community page has a number of features in place to prevent abusive behaviour, but it isn’t bullet-proof.
If you have received an abusive comment on your page, you can delete it and permanently ban the offending commenter from your community.
Bandcamp support will be notified of this action and review whether any further action is required. The commenter will not be notified that you have reported them.