I am so sorry to hear that you are going through this! Are you handy at all? If so, read, read, read the installation manuals and guides so that you know what to check when these folks finally get back to you. The same thing applies to the operating manuals for your system.
It surprises me that Innova has not trained your dealer on how to set up a long arm quilting machine system. It seems to me that would be a priority for Innova and the dealer. Both have a reputation to maintain and build.
Suggestion - when you get the LA set up correctly, start learning how to operate the machine and computerized software in small increments. If you try to do/learn everything that can be done with your system all at once, it can seem like you're trying to swallow a whale. But small increments of learning are manageable.