Voicemails getting through from blocked callers
So, I recently blocked a contact of mine, which included like 4 different phone numbers. All are showing up in my blocked callers list. However, I am still getting voicemails from this person. The phone doesn’t ring, I just all of a sudden get a voicemail notification. How do I stop this???? I don’t want to receive voicemails from them!
iPhone XS