The Sexual Assault Center is specialized in giving medical and psychological care after (online) sexual abuse. The Sexual Assault Center can also help you file a report with the police. You can call them every day (anonymously) via 0800-0188 or chat with them. Help from the Sexual Assault Center is free.
You’ll find a more extensive overview of aid organizations and information on SlachtofferWijzer. They have everything from easy accessible chats to (online) therapy, from hotlines to legal help to peer organizations. On SlachtofferWijzer you’ll find the help that suits you the most. The site also contains tips on how to help someone else who is experiencing sexual harassment/abuse.