My experience was the same as others, but today they did leave a message (generally they do not). I don't press either 3 or 1. I once pressed 3 to stop the calls and they continue to come. I do not have a mortgage, so don't know how they think they are going to lower my rate!
Looks like they revived this number after retiring it for nearly 2 years. Got a call tonight 8/4/14, no message left. Came up on caller ID as Gravis Marketing. http://gravismarketing.com/ They specialize in political surveys, using robocalls. Oh good, the political season must be upon us! This is exactly why I bought a call blocker, to keep the scammers and the political surveyors away. Wait a dang minute.... I thought the politicians "never pay attention to political surveys." At least that's what they say when they're behind in the polls! Must be a survey conducted by the other guy, I guess....