Hi, BestHealth.
Have you considered using a toll free service? Depending on the service, you can record info about the services you offer, and prospects can either be forwarded directly to you or they can leave a message.
With the system I use, I capture the telephone number for every person that calls, and I can set up different extensions to describe different services that I offer.
If you want to check it out, go to
www.updesk.com. The site describes it as a system for real estate agents, but it can actually be used by any small business.
Best of luck!
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Sue Fenwick
The Success Collaborative
Creating Space for Businesses to Grow
http://www.successcollaborative.com