Pedestal Sinks How Are Pedestal Sinks Attached To The Wall?

How are pedestal sinks attached to the wall? - pedestal sinks

I have an ass knees, so I sat in the twilight, and used the sink in my bathroom to take chair and oops, that was displaced from the wall. Now the seal around the sink is starts, the sink is about 1 / 4 inch from the wall and not attached to the wall. If that screwed to the wall or put the wall? Whom do I contact to resolve this problem?