Filter Unknown senders not working

I keep receiving 2-4 scam text messages each weekday morning for over a week now. I turned on “filter unknown senders” option and it hasn’t changed anything. It’s been over a week and I still receive the same amount of scam text messages each morning and the unknown senders folder is completely empty.

The each scam message come from a different number each morning so it’s impossible for me to block them all.

please help! I’m getting extremely annoyed.