Free listing scam

Operators for this scam have Middle Eastern or Indian accents. They use Anglo names and say they are "updating the business listing information for the next twelve months." During the first contact, I was asked for my full name, and my title, and to verify if our mailing address was correct. The solicitor read off a garbled attempt at the address and I said it was not correct. Then they say they are transferring the call to a listing supervisor for approval. That's when I hung up. They have contacted our business a dozen times over the past 2 weeks. The caller ID comes up "out of area" but our phone system recorded their number as 546-286-6611. Attempts to call back that number failed. I found out this is a scam and they are posting third party charges of $39.95 or more per month to business phone bills. If you say the word "yes" it can be used in a doctored recording to appear as though you agreed to pay for a listing and to be billed for that listing.