This will only take you a minute, but the consequences for the company can be significant. This is from the FTC website:
"A company that is a seller or telemarketer could be liable for placing any telemarketing calls (even to numbers NOT on the registry) unless the seller has accessed the registry and paid the fee, if required. Violators may be subject to fines of up to $16,000 per violation. Each call may be considered a separate violation."