Direct Auto Insurance-Accurate Auto Insurance Worst Company Ever! Chicago Illinois

I just received the denial letter, which I had to call for as it has been two weeks since they said they were mailing it out. It just says that I had undiscosed information and that is the reason for the denial. It does not state what is undisclosed. I just signed up with another insurance company, to insure a car that a friend is going to loan me, and explained every single person living in my home, my daughter and my son. They said I do not have to add them on my policy as my son is only 15 and my daughter has her own car and own insurance. She is only tempoarily staying with me, to help me get back and forth to work, but I figured I would run it by the insurance company, just to see what they had to say. They said, she was not required to be on my policy. Direct Auto is trying to frustrate me until I give up. There was no other car involved, I only made a property damage claim. Thankfully so, as I would hate to put another party through what I am going through.