As someone who worked as front-line support and turned into the authority who's asked to resolve complex cases, this is nonsense. They aren't playing Tetris ignoring the queue. It's more likely the front-line staff are overwhelmed and/or don't know how to cut through the corporate hoops/politics to find and deliver the fix, and/or too shy/embarrassed to admit ignorance and having to pass it to the higher-ups for someone who knows how to fix things. It's more likely going in circles because they want to resolve it within their levels without having to escalate it.