That's fair. What we found especially in B2B is that when people decide to put in their phone number they are actually glad to have someone call and offer help

That's fair. What we found especially in B2B is that when people decide to put in their phone number they are actually glad to have someone call and offer help. I call users every day and never had someone be mad at me or cancel. Quite the opposite, many upgrade as a result of our interaction :)