Rules not blocking spam

I have been receiving 20+ Spam emails per day which all originate from addresses that begin with "cbd@" and end with ".de"; the middle portion is an ever-changing random mix of U & lc letters. I created rules which call for any address, subject or message which contains any combination of these to be deleted and they disappear when I click "Apply". However, I continue to receive more later. If I "Edit" a rule and click "Apply", they disappear but more continue to come in, all from the same "cbd@" and ".de", with slightly altered middle portions of the address. I've also moved these rules to the top of my rule list but they still get through.

I'd love some help with this!!!