This unfortunate situation is one where Tesla should do better. On my recent journey to Cincinnati and back to California, all stations were in good order heading east on 15, 40, 44, 64, and 71. Coming home was a different matter. Three stalls (at least) were broken at Beech Grove (south of Indianapolis). I was able to reach the agent using roadside support, yet the touchscreen showed no reduced service. And the internal software at Tesla confirmed my concern!
Similarly, two other locations in Wyoming had grit in the plugs and could not be plugged in snugly thereby activating the dread orange ring around the charge port. I was fortunate that no one else was present.
Both times I called the agent said he would notify "the Supercharger Team." This approach using an interlocutor is insufficient. With over 200,000 Teslas in the US alone now, there should be ways to notify Tesla timely and easily when stalls are not functioning. That information should be able to be sent immediately to our vehicles when we are within range of the Supercharger.
Similarly, we should be able to request alerts for Superchargers along our journey to notify us that at Location Z, stalls 2B, 4A and B are inoperable, or operable, but at substantially reduced power. It is easier to plan our charging when we have advance notice. We can charge longer earlier and avoid the problematic location, or we can take an alternate route (if possible) to another location.