Is it legal for my employer to deduct my salary for unpaid tax dues?

I just found out my employer in Bangalore deducted ₹15,000 from my last paycheck for some tax dues they claimed I had. I never agreed to this and feel really betrayed since I wasn’t informed. I tried talking to HR, but they said it's legal under some tax law. I’m scared about whether I can fight this. Can you help me understand if this is right?