Thanks to Mahindra Customer care, I got reply of mail on just couple of days and fixed an appointment for Monday, 6th April. I went to workshop and explained my problem to one sr engineer, he check everything and within couple of mins he agreed to change the clutch wire.

So they changed the clutch wire and now its almost 50% softer than earlier.

The problem is its clutch wire only, becuase that catches durt and grease and produces less friction day by day.