new voicemail notification WILL NOT DELETE

I am so unbelievably frustrado. I haven't used voicemail in years, I only get called approximately 5 times a year. and tmobile wants me to set a voicemail message…

I click the notification for my new voicemail and it says "set up your voicemail box in three easy steps". mind you, I've had tmobile for ten plus years, and this phone number for at least fifteen. my voicemail is as set up as I want it to be. I can't clear this message without doing the three steps they're asking me for, which is first setting up a voicemail pin (which I've already done????) and second setting a greeting, but I don't want to have a voice message play when people get to my voicemail. obviously I don't know what the third step is because I won't do the second step. 

for reference I have a samsung note20