We use the present simple for: a) things that happen repeatedly. b) permanent situations. c) future calendar or timetable events. d) future meanings after if, when, until, etc. we use the present continuous for: e) something happening as you speak. f) temporary situations in a given time period. g) intentions for the near future. h) irritating things that often happen.
Present Continuous is for actions that is doing right now. (e)