Business Development - How to mov your orgabnisation forward

As a new business specialist I spend a good part of each day researching and then contacting organisations to introduce my services to relevant people. What I find most frustrating is the fact that when I get to the very top of an organisation people are very receptive and willing to listen and even take on board hat I am saying. However people who are paid to look at new opportunities for their organisation can be very dismissive, difficult to get hold of and my biggest bugbear of all Never is say Never return voice mail messages ( what is the point of voice mail if you do not respond to messages !!!!!!).

I know these people are doing their job in preventing too many calls or opportunities get through but I would suggest that they are also not doing their job because these new opportunities could save money, deliver better services, work better etc etc etc.
So here's a suggestion if some one calls offering a service at lest have the decency to listen and make an informed decision on what is being offered to your business. You have nothing to loose and you may actually be able to d your job better as a result of some new services.