Got Ripped Off

We purchased this software specifically because their website listed Authorize.net as a supported Payment Gateway. When I asked how to configure Authorize.net, support claimed that it wasn’t part of the software. When I mentioned the feature list that listed Auth.net as a feature, they went and removed the feature from the list and denied it was ever listed on their website. They refused me a refund.
This is how you will be treated if you purchase their software:
http://i.imgur.com/0KaseuJ.jpg

And here’s proof it was on their website before I mentioned it, at the very bottom, under Pro Features:
http://web.archive.org/web/20130123081028/http://www.wpauctionsoftware.com/features/