We cannot offer a refund due to our policy and Indiegogo's Terms of Use. We collect funds for the development of a product to take to market. That is why you are getting a unit at our cost and not the retailed price which can be three times what you have already paid. If we offered refunds development and production will indefinitely be pushed back with less and less dollars to use for the product.
Larry has also written an interesting blog about the difference between presale (Geek Out V2/V2+) and crowd design (Wave/Pulse/Vi):http://lhlabs.com/blog/2015/04/the-difference-between-pre-sale-and-crowd-designing/
We will fulfill our promise to you and deliver your product. There are delays, but I believe once you finally do get your product, you will be blown away by the quality of sound you will be receiving and have an advantage of getting it at a lower cost.