YouMail the solution to an endless problem.
The free edition is 20 transcriptions per month for calls allowed to go through. 100 calls for $5. This service handles all your calls by scanning the callers against spam and robo call lists. Those that get through you can manually block. WhAt is neat are the caller greetings you have to choose from. Highly recommended. The Pro is more expensive edition has all kinds of features.
I loved the feature of receiving notifications if you missed a call when your phone was off w/o having to pay for the additional feature...
An Android User
One of the best!!!
One of the best and must have apps on the market.