There are several mortgage companies out there that buy your information from the credit bureaus and will hound you relentlessly when the bureaus tell them you are searching for a mortgage. If you would like to keep from receiving all those phone calls and mail pieces, you can do so by calling a toll-free number that enables consumers to opt-out of all pre-approved credit offers with just one phone call.
Call 1-888-5-OPTOUT (1-888-567-8688) for more information or you can do it online at: https://www.optoutprescreen.com/?rf=t