I would pay good money to watch the Sergeant at Arms round up the wayward congress critters to attend to insure a quorum, as is enabled by the Constitution and law.
If the refused and there is, as we know, a disagreement between the Senate and the House, he can adjourn the House indefinitely for this year.
He can keep that hole shut down till late 2020 since the constitution requires he convene it once a year. Its already been in session this year so..