On January 10, 2011 at 5:18 P.M. (MST), I got a call from Dan at what sounded like Low Max Heating and Duct Cleaning.  I told him I didn't need my ducts cleaned and hung up.  To give Dan credit, he did apologize for bothering me and was respectful.  Even so, I don't like having my supper interrupted by sales people of any sort.  If I want my ducts cleaned or some other service done, I'll call them.