They call my biz phone all the time and it just so happens to also link to my home phone so I feel your pain.

I generally let any number I don’t recognize go to VM anyways. They google reps always leave a message so their numbers are easy to identify. When I see one, I just block it. This keeps them spinning their wheels nonethewiser that I won’t even be bugged by their call. Generally, as the reps change, I’ll get a handful of new numbers to block every few months but it’s been very managable.