We do not have a mortgage either. I have blocked this number and still receive daily calls. I am on the Do Not Call Register. I'm ready to report them.
I used to have a mortgage, and I tell them it is all paid for so they have no reason to "update" my records. Most of these companies are just doing market research, connecting the dots, and building a cohiesive comprehensive data base by which eventually, they can devine through senergy, everything else about you. They then sell that informantion to anyone with money, no matter who the sindicate is. I get a call a day from very diffrent parts of the US but particularly, Florida.