Indian Railways — train delay for no reason

Surat to virar there is a shuttles were run but do not know for some reasons shuttles were replaced with memu. So as people coming from mumbai to vapi in fast train there is only one train between 7:55 to 9:00 and same it was always delayed half hour it is about to 15 days continuously was recognised that only 2 to 4 days it was arrived ontime otherwise it was daily 30 minutes to 1.5 hour late. Please do something. Daily lots of passengers bear with this thing. Please kindly help.