DCF is not allowed to tell you the name of the person who reported you. Sometimes, the people that would do this will call anonymously. You are informed as much details as possible about the allegations. Sometimes the person who is reporting you will let you know and a lot of times you will be able to figure it out based on the details.
You do have the right to get a copy of your report and the summary; which you should send to the Director of this particular DCF office. Although some of the report will end up being redacted or blacked out.
