Cancer Care implemented the toll-free line in five states a year ago on a trial basis.
For those that don't, a call to the fund's toll-free line should produce answers.
The company estimates that it will receive 22 million on its toll-free lines this year.
Employees of the accountability office placed 420 calls to the toll-free line.
The first company to use toll-free lines hosted numbers for major companies.
The agency fields 70 million telephone calls a year on its 24-hour toll-free lines.
In 1989, the group said, consumers placed eight billion phone calls to 635,000 toll-free lines to order or get information on products.
She started with a toll-free line and a couple of hundred items shipped from her home.
The companies must also have local or toll-free lines in service 24 hours a day, seven days a week.
No similar national toll-free line is available for stock investors.