D-Mart / Avenue Supermarts — price tag against actual bill

Address:

Thane, Maharashtra, 400606

I have purchased I pack of Red. Bull can of 4. Which price tag was RS. 325/-. When I paid the amount the billing amount was 360/-.
When I asked for the same, the sales person took nearly half hour to resolve this.
If somebody purchase more than 30-40 items he is unable check the billed rates with price tag.
That means all the people who purchase the items with price tag will be fooled at the payment counter.
Next time this will go to consumer court.