How to not contact the same people who have already responded no

[Julian Christel]

I want to contact everyone on my list, but I do not want to call/text/mail the same people who have responded with a "no" more than once. I'm having trouble figuring out how to do this. Do investors usually cold call first, and then whoever hasn't responded text blast, then mail, for example? Or do they filter out the people have already responded no using their software? I use Mojo for my dialer and am able to filter data generally easily, but the texting platform doesn't have an export function that would allow me to filter these people out, only people who have not responded to my messages. Maybe the texting platform is the issue?