Voicemail Option Disappeared with Latest Update

I just updated my iPhone 12 to iOS 15.6 last night. Today I noticed that I can not access my voicemails through the phone app. I can still receive my voicemails through my carrier and calling out as usual however, the visual options, the greetings options, notifications, all of it is no longer available, nor do I see any way of accessing it through an app (including phone) on my phone. Help?