Big Bazaar / Futurebazaar / Future Retail / Hometown — wrong billing and product

Address:

135003

Dear team,

Today i purchase diff items from big bazar of total more tha 4000 rs. When i checked my bill following error found in bill:-
1. On a product its mention in store by one get one but i charge for 2.
2. On rice packet of 1 kg discounted price mention 110 rs with by one get one but in bill i charged retail price of 160 rs mention on packet.
3.in sugar counter there are several packets of sugar with price but with same name packets of rice lying there and by mistake i bought rice instead of sugar so i want to exchange it.

So its not expected from big brand error in billing.