EP is a positive, supportive space. I'm sorry you encountered someone that didn't treat you well. With such a large community of members from around the worlds, each with unique perspectives and ideas, we know that members won't always agree on things. If you don't appreciate a member or their interaction with you, you can block and prevent any future interaction with them by visiting their profile page and choosing 'block me' on the left hand column.
If their behavior is not just personally offensive but also a violation of our terms of service, please flag the account so that staff can review it and take necessary steps to warn, suspend, or remove a member.