Levi's India — less discount compared to as displayed

Address:

Kolkata, West Bengal, 700156

Yesterday i purchased levies top from city center i, kolkata, having 30% discount whereas bill shows a discount of 21.6%. On query it was explained as 30% discount on mrp plus gst. If that is so, then its an additional 12% gst on 70% gst (After discount) which can't be collected. Basically it is fooling the bewildered customers by giving 21.6% discount instead of 30% as displayed. The scheme applies to any and every discount given by levi's.

The policy must be changed.