If you want to make it as easy and as cheap as possible for customers to call you, toll-free is the way to go. It lets your customers know that you value their call because you pay for the costs of the call. Everyone knows they are free to call because they start with a well-known range (x800). These characteristics create a feeling of being trustworthy and professional. And since customers can call for free, tollfree numbers are always compliant with local legislation.
Toll-free numbers