Our lease states that we need to give a 30 day written notice to vacate. We gave the property a very basic written 30 day notice. Since then they have told me that they have received the notice but will not accept it because we haven't signed their legal form to vacate. I asked if they would leave it at my door so I could have an attorney look at it since it was a legal document. I was told they don't let their forms leave their office. Do we have to sign this legal form to vacate or is our written notice enough?