Sorry to hear you are not able to get in touch with Sling Media. In order to reach us please visit: http://www.slingbox.com/ContactUS In order to view our contact information properly please be sure you are logged into your account in the top right hand corner of your screen.
From what you explained above it sounds like you are having are having trouble connecting via Internet. To help you connect here is a link with helpful information: http://support.slingbox.com/sitecore/content/Support/KB/KB-1000241?sc_lang=en-US
In addition to your last concern about the $15 charge to get access on your iPad, this is a one time fee for application. Once you have purchased and installed the application you would be able to stream your TV on your phone free of charge.
Hope this helps!