The other driver said she called Tesla, although the snow hadn't been cleared on our way back through a few days later. (It had mostly melted on its own, so it wasn't nearly as bad.)
I doubt there was anybody who could do anything about this (or probably even cared) at the Wendy's/gas station. I wondered if it was intentional, as there were no other piles of snow anywhere else, and it's a pretty good sized parking area. It could simply have been the most expedient place to push the snow, I suppose. This was probably also one of the first snows at this SC (it went live this past summer), so they might not have realized what they were doing.
At least they didn't push the snow into the charger units and break them.