Ask HN: How does Skype continue to do business with no customer support?

I have an order issue with Skype, and trying to get anyone to respond has been surprisingly tough. Turns out Skype has no phone number (a VoIP phone service with no phone), no human behind their Twitter accounts, and only a discussion forum where pleas for help go unanswered.

I'm baffled. How does a company like Skype, with practically zero customer support, stay in business? Why do we the customer tolerate it?

Also: can we compile a list of Skype alternatives?