i have purchased 4 stroke engine oil form one of my near by hero Honda show room . the printed MRP: on that product is Rs: 215 /- and its mfg date is 23/02/2012 . and when i got the bill the amount payable on that bill was Rs: 217 /- . and when i inquired they told that the tax rate has increased . but it was of 23/02/2012 . what to do . at other stores its selling rate is Rs: 200 /- .

so kindly provide some help on my issue