I'd have your customers come to you, instead of you going over to them with cold sales calls and outbound marketing strategies.

Develop a landing page showing exactly what you offer, why a customer should use your service and not your competitor's, and something you're welling to offer them for free! Instead, ask them for their email address or phone number to follow up with them afterwards.

Now that you've build your page, it's time to generate traffic to it, for this, I'd recommend going with an adwords search campaign and social (Facebook to be specific) digital advertising (Click-to-website)