Resolved Question: How do I stop getting mail I dont want?

I keep getting mail from sex and singles websites i have not requested them and everytime i block them they change their domain just enough that it gets through it is being sent to my spam folder but I dont want to receive it period. I’ve tried email them by replying to the email to ask them to stop but it comes back as undelieverable. I’m a happiley engaged christin woman and I would like for this to stop. Help Please.