Big Bazaar / Futurebazaar / Future Retail / Hometown — cashback on my purchase and be fooled by the billing counter personnel

Address:

Kolkata, West Bengal, 700013

Respected appropriate authority,

Yesterday I bought some food items from your store near esplanade, Kolkata. I'm using Future pay so that to take benefit of the cash back. I gave the person at the billing counter my mobile phone, with future pay app open on it. That person ask for my big Bazar card. I gave him my card and later on what I come to know from him that neither my future pay wallet balance has been used nor the additional cash back offer on my purchase are going to be added on the future pay app.
The reason he told me that the future pay app linked with my existing no. [protected], whereas the big Bazar card is linked to my earlier no., i.e., [protected](I'm no longer using this mobile no )
I requested him many times to use my future pay app wallet balance, and link the purchase item with my future app. But he told me he cannot do so.
I even run to the customer care personnel at the store, but even he told me that it cannot be now linked to your future pay app.

I'm associated with big Bazar for many days, since I was student when I use to come with my parents. Yesterday was the horrible day for me just because of my purchase experience. I'm feeling befooled by the big Bazar personnel.

Kindly atleast link my yesterday purchase with my future pay app, linked with the no. [protected].

Awaiting for the reply.

Pradeep Kumar
[protected]