After it got cancelled you have 24hrs to leave country. If you have letter from your employer you can extend 7 day at local immigration but you pay 1900 for 7 day extension.
If you have RE ENTRY PERMIT they don't ask you to show proof of funds. Before leaving immig. passport control, check your passport make sure the officer put the right date that match to your visa expiration date.
I've read forums and they required people to go to town Immig. takes 40 minutes to get re-entry permit stamp.. You still have 3 days to get re- entry permit in Phuket town Immig. Just to be sure you have one. :)