If you don't pay for support, you will get what you paid for. This is orthogonal to whether the software is Free or non-Free. If you've ever heard of Red Hat,

If you don't pay for support, you will get what you paid for. This is orthogonal to whether the software is Free or non-Free. If you've ever heard of Red Hat, they were a Free software support organization that became an international success story with a multi-billion-dollar valuation. They are not the only ones out there. In short, what they'd do if there's a problem is pick up the phone to whoever is contracted to provide support service, and expect support.