Can they filter out all the unwanted sales calls?
As an ex salesman ~ why would they want to?
For most Directors meeting sales reps is the only way they can gain any up to date information.
Serious head < GPs, once they have completed their training need never attend another learning experience until they retire ~ it is only the sales reps from the medical companies that keep them up to date > end of serious head.
The Quote above came from a GP