A new survey takes a look at the top five most annoying phone calls. The poll from YouGov was done on behalf of CPR Call Blocker, and finds the number one most annoying nuisance calls are automated robocalls, with 66% of respondents citing it. Coming in second are credit card and loan offers, at 28%, followed by charitable causes, with 23%, long distance providers, at 11%, and lottery or sweepstakes offers at 10%. About a third of U.S. respondents reported getting 20 or more unwanted calls per month. Also, about 13% of Americans have fallen for a scam on the phone.