Everyone- these services dial all of the numbers in an exchange- for instance they would dial each and every number of 212-555-0000
and it doesn't matter if the number is a fax or dead number because a computer dials for them and discards the fax/dead numbers.
I am in the 615 area code and just got the the survey question phone call to a work cell phone number which is on the Do Not Call List. Went through the survey with fake answers and got a fast talking operator who would not give me any information other than the company was "Answer Solutions" she would not give out her location or call center company. She would not give out the companies information. She said that she was trying to transfer me to claim my cruise and then finally hung up on me because I was asking too many questions.
Tell them that you are on the Do Not Call List and get the company information. Someone on another call report board said that the calls were from surveyclaim.com but there is no way to contact any live person via that website other than by giving out your information.