Big Bazaar / Futurebazaar / Future Retail / Hometown — complaint regarding services "action has not been taken as per our request"

Address: DATTAWADI WADI DIS NAGPUR, 440023

As per terms of shopping in Bigbazar, I am receiving every month cashback, but in the May month, future pay has unauthorizedly deducted 120 Rs. from my future pay wallet (snapshot of the history of the wallet is enclosed for your reference). How can they deduct past month amount in next month without doing any shopping by me? When I have tried to complain about this on 2nd week of may month to customer care, they replied to me due to a technical issue this has happened and it will be resolved within 3 days & I will get my cash back into the wallet and now more than 20days has gone still my problem has not resolved and nor I got my cash back into the future pay wallet.