Big Bazaar / Futurebazaar / Future Retail / Hometown — short payment of refund amount then actual

Address:

Kutch, Gujarat, 370201

Sir I am Pitamber Chotrani I purchase today a Printed Jeans For my Daughter from Ur Store no.2946 Gandhidham I Returned A product of MRP 699/- and Store sales Team Issue a credit note of 599/- I was in hurry, I didnt check at that time. Against that product I purchased two new products and paid the difference amount 300/- actual amount was to pay 200/- but the stuff collected 300/- (100/- excess)
Please guide me how to sort out this and I can get back my 100/- rupees. My Order iD :[protected] TXN ID: 30996 Dt.02/05/2018 TIME 17:19 INVOICE NO:0010763

Regards

Pitamber Chotrani