Roofing company wrote an email offering a payment plan stating if I could pay x amount of money for x amount of years. We couldn't pay in full so we agreed before roof was put on. After roof installation days later took some info from us and informed us we weren't approved for the payment plan. Not once we're we told it was based on credit since they emailed offering it like it was said and done once we agreed. We have constantly called and nothing has been settled since they won't call us back. I'm worried they will put a lien on our house. What are my options? Can they really get away with that?