The issue was also brought to the notice of the Department of Consumer Affairs, Govt. of India. Department of Consumer Affairs, Govt. of India have requested State Controllers of Legal Metrology to take necessary action for the violations of Legal Metrology (Packaged Commodities) Rules 2011. A scanned copy of their letter No. WM-10(28)/2014 dtd. 23/06/2014 is posted here for wider awareness of the consumers.
The consumers who are charged VAT extra on the discounted prices are requested to report the matter to their State Legal Metrology officials with a copy to the Trade and Taxes Department of your State.