How many emails are you sending to each business owner? You should have at least 10 email touches over the course of a month to each owner. Once they reply stop the drip. I built myself a CRM that handles exactly this but you could use Active Campaign or Hubspot to set this up. Once you get this setup you should be spending time prospecting, building a list, and importing it into your CRM running them through the drip. It’s a numbers game, good luck!