Hello, do I need to cancel my extension of stay before leaving? My school told me to contact them before I leave Thailand but now they’re telling me it would take 2-3 weeks to process the cancellation when I only have 10 days left on my visa. I wish they’d told me this sooner or I had read up on it but they also advised that I should leave, apply for the dtv and then cancel the extension of stay once I return. Would appreciate any insight.