I have the True Caller app and love it. It tells me a call has been reported as spam giving me the option to answer or deny. It also gives me the option to block those numbers. The only negative I have, is that when I look through my call history I see Payday Loan has been blocked several times a day. Don’t get me wrong, I’m glad it reports the blocked calls to me, but just seeing that Payday Loan calls so much is so annoying.