Delhi Metro Rail Corporation [Dmrc] — time delay

I am a frequent traveller of metro and everyday, in the morning, the train from botanical garden towards dwarka sec 21 (Blue line) is late. Sometimes, it comes after 10-12 mins. The station gets overcrowded due to the several people waiting for a metro for 15 mins. Metro should be there in every 5 mins. Right now, the screen shows 14 mins to the train. Please do something about this. It is always late.