Hey,
When you block someone with blocking texts / calls, avast!automatically logs actions, so we can block someone but have always access to sent text, and we know too when this person calls…
Most of the time, we block someone to haven’t more new of it. Anyway you sould probably add the possibily to NOT log actions from blocked persons.
Sorry for my english, this is an academic english 
Don’t hesitate to ask me explanation !