I really should call on my aunt more often.
He sat there, baffled, hoping nobody would call on him.
The salesman persisted in quoting a rate higher than was listed, until we called him on it.
Mr. Wilson came to call on us one Thursday.
Keep in contact with the parents, and do not hesitate to call on them for advice or support.
Please call on the US government to release all detainees.
Perhaps I'll call on this gentleman and ask him as I dally in Ohio.