Have you tried partnering with other people in your space? Does your product work well as a component in a stack? If so, partnering could be great for you.
If you're sure you have a good product/market fit (are you sure enough to bet your company? Because you will be...), then I'd look at some partnering options to drive growth.
Steve Blank argues (and many more agree) that a startup is a temporary organization designed to accomplish a small set of goals:
1) Learn and understand exactly who your customers are
2) Learn and understand exactly what your customers will pay for
3) Achieve product/market fit (though Blank does not use this term specifically)
Only after you've met this criteria to you begin marketing. What you have described is reminiscent of the "build it and they will come," where the focus was on building your product instead of understanding your customers. I may be mischaracterizing your situation, but history has taught this method to be fatal for a startup.To better understand this, it's best to fall back onto Paul Buchheit's notion that a small base of customers who love you is always better than a large base of customers who like you. The reasoning behind this is thus: A small, passionate base of visionary customers can be exuberant about a Minimal Viable Product, whereas the mainstream market cannot. From those visionary customers willing to purchase an MVP as opposed to a whole product, you can learn an incredible amount.
Back to you: Currently, you have a small number of customers who like you. If the base of visionary early customers you've attracted just like you, how can you expect the mainstream market (which you seem to be aiming for) to even like you that much? The important factor here is that the mainstream market has even more needs than the customers you're currently serving.
You're worried about cash, and I'm afraid that marketing may be money down the drain. I recommend analyzing your spending and drastically lowering your burn rate. Turn away from the mainstream market and back to your visionary customers. Ask them questions. Find out how you can build a product that they love. Achieve product/market fit (for more information on that, I recommend searching out Sean Ellis' blog).
It seems that there is much to learn about your customers, and that the best course of action here may be moving backward instead of moving forward.
Specifically, nationally, we trade/discount services in exchange for festival sponsorship (which usually comes with ad/print/website link). We also write useful blogs/articles/reviews/interview for bands, primarily to drive traffic and serve as link bait.
Locally, we book shows/art opening at our store/office space and cut deals with promoters, venue owners, and tastemakers to help build the brand.
While we might be different from a traditional SaaS service - we are a web based business with a brick and mortar storefront - it all boils down to engaging your target market/community, often times in a non-salesy/gimmicky way - building trust, respect, and brand awareness is the best way to build a loyal customer base.
They generally work on referral, but I'd be happy to make an introduction if that's what you're looking for; my email address is in my profile.
Well, sure, "ideally" it's easy to find people to call, "given" a list of companies!
Much more interesting if someone produces the list from a vertical.
For referrals
For testimonials
What websites, tradeshows, websites, on-line forums they read.
Take part in these as they are likely to be target rich environmentsDid you try cold calling? How about one of the founders taking a sales person role and start knocking doors?