This company (tollfreenumber.org) is a SCAM. They are a sales affiliate company for COA Network. They will tell you that if you transfer your toll free number to them, that you will experience no down time as long as your exiting carrier does not disconnect your account before the move is complete.
We did the transfer process and our lines went dead. We then were able to get in touch with COA, (who is the company that handles the lines) and they explained the process and that our lines would be down for 7-10 days minimum but could be as long as 3 weeks.
COA was very nice and quickly reversed the transfer back to our existing carrier (Windstream / windstream.com) and they were able to have it back up within a few hours.
So if you are a company that relies on your phone lines, then don't switch carriers unless you have to.