Employer refuses to clear my pending salary after resignation.

I worked in a tech company in Bangalore for over a year and resigned last month. My employer has not cleared my two months' pending salary, citing financial issues. I gave proper notice as per my contract. I have repeatedly emailed HR and my manager, but they keep delaying. I'm stressed about paying my bills and EMIs without this income. What steps can I take to recover my salary legally? Can I approach any labor authorities for help?