I assumed that once I flagged a member as spammer (which automatically removes their profile picture) they could no longer access their account, and yet I just saw one member flagged as spammer just uploaded a new profile picture? 

 

What actions do you have configured when an account is marked as a spammer?

If you are not banning them, they would still be allowed to change a profile picture. 

You could also use following 3rd party app to block their profile 

https://www.ic-essentials.com/files/file/18-block-banned-spammer-member-profiles/

32 minutes ago, Randy Calvert said:

If you are not banning them, they would still be allowed to change a profile picture. 

Thank you, that was it, I had everything but "ban" selected, I've now selected it.