removing all features from home phone, call waiting, voice mail, call forwarding

Good morning,

I have read articles  in forum going into 7/29/19 that others are requesting the same thing due to working from home.  I am having the same issue and could lost job due to Xfinity not being able or not understanding how to remove these services so my phone gives off a busy signal when a call comes through and I am on another call.  I was told features were removed and they are not. There is a rep on here who keeps saying send private message but you are unable to.  Is this something that can even be done????