The people asked to speak with me. They were calling my cell phone. Said that they were from Matthews Survey, and wanted to ask a few questions that would only take 2 minutes, tops.
Do a search on call blocking devices and phones.If its a cell phone, there are free call blocking apps out there including trac & straight talk.
http://800notes.com/forum/ta-5d4e343675a5629/call-blocking-devices