I'm trying to get a business off the ground, its success will depend largely on referrals and my ability to network. Without going into a lengthy explanation, I'm providing a service for which I'm licensed but have virtually no experience yet.
No worries! Many things are going to happen, but they're all stepping stones toward where you're getting, so don't give up on it. What they did is part of the reason why I advised against door knocking / cold calling; most people don't like that and will associate that dislike with your company. However, if you find a means of obtaining leads, then, of course, call them and try to market to someone that's actively seeking since they're in the market for it.