How long for the process of cancellation Visa and work permit in Dalian, China?

Hi,
For now I'm facing the problem as my company let me apply to cancel the entry permit on my last day work on Sep 23, 2016 and they told it take around 7-10 days for processing. However, I need to go back my country on Sep 24, 2016 just one day after my last working day. It have another solution to cancel?

Thank you.