Spam isn’t just an annoyance to your email inbox; it's also becoming a problem for our phones. Last year, the average American received 9 monthly spam calls, totaling 3 billion spam and unwanted calls nationwide, costing $25.4 billion. Spam risk encounters people will likely receive are through: Out of people who fell for these kinds of scams, the most common amount people lost was between $100 - $249, and a smaller group said they lost over $1,000.