Reliance Mart — got wrong amount of change

Address:

560027

I have recent visited reliance market located near shantinagar bus stop. I purchased unibic greeting which is cookie in special pack in quantity of 20 units. Mrp supposed to be 190 but i got a discount and per unit cost reduced to 76. So the total bill amounted to rupees 1520 and i gave 2000 rupee note for which he has to give me change of 480. But he gave me change of 320 and i being in hurry didnt notice that. Even the bill was printed wrong. So please refund my remaining amount.