I've used Contactability and I didn't like it
I had to provide the leads so they used my old leads to try and resurrect them and it did not work well
Contactability's offer includes the leads (for me), so maybe we're talking about two different programs.
I'm quickly coming to the conclusion that my best results may be from buying clicks and sending prospects to my own forms to create leads.
I'm surprised there isn't (maybe there is) a company that sells leads for $50 each, but you can close > 30% of them if you have the product/price because they're motivated to buy.
I would be happy to pay $75 or more per sale if I could spend my time selling instead of dialing for dollars.