Reliance Fresh — Rude behaviour of staff and a mistake of price change

Address:

Ahmedabad, Gujarat, 380059

As i have gone to purchase aashirwad aata 10kg.There they have described the price as RS289 but at the billing counter they asked me for RS 299.As i have little argued with the staff members but they said that it was their mistake of not changing the price.But what about me as i have read 289 so they have to give me product in 289 only.As asking for product in RS289 they said that if you will not pay 10RS then will the billing girl will get from home?? Its a worst reply by your staff to the customer.I want such action to the Store @Thaltej a'bad.
Thank you
SMIT GANDHI