I don't care what this company says, I don't believe them. The are call center management firm, which means selling phone lists. I really don't believe their cock and bull story about verifying numbers for directory assistance. After some relative peace without robo callers I've been deluged with robo calls today. I think it's due to Volt Data sending out verified working numbers. Where did they come up with Volt Delta. Sounds like they want to hide what they really do. Sell phone lists for profit and not caring whose life they make harder.