Android phone buzzes for incoming Zoom phone calls despite notifications being turned off

i have an issue with the mobile Android zoom app, and hoping someone might have an idea how to fix.  My work recently switched us all to zoom phone numbers.  I have Zoom installed on my phone, logged in with my work account, as sometimes I take calls on the road.  I have all notifications for zoom turned off on my phone, however whenever I get a zoom call on my work number, my phone still buzzes. It was happening all during my holiday PTO, and driving me nuts trying to figure it out, and I finally realized what was happening today when I was on a zoom mtg and got a notification of a call just as my phone started buzzing.  Any idea how to REALLY turn notifications off from zoom on my phone??