“When you enter a city or town, find some worthy person there and stay in that home until you leave. When you enter that home, say, ‘Peace be with you.’ If the people there welcome you, let your peace stay there. But if they don’t welcome you, take back the peace you wished for them. And if a home or town refuses to welcome you or listen to you, leave that place and shake its dust off your feet. I tell you the truth, on the Judgment Day it will be better for the towns of Sodom and Gomorrahn than for the people of that town.” – Matthew 10:11-15
There was a day when ‘follow up’ meant continuing to pursue and trying to convince those who said ‘no’ to say ‘yes’ more than looking for new ‘towns’ who would say ‘yes’.
Just because He says for you to shake the dust off of your feet doesn’t mean He won’t cause others to walk through their towns or hearts.
The key, here, is for you to continue forward to find new towns, new hearts, who will say, ‘yes’.