Reliance Mart — Excess amount collected

Today evening around 20:30 hours I bought apple weighing 1.052 kg from Reliance Point at Beema Nagar, Heber Road, Trichy 620001. The actual rate for 1 kg apple was 139 buy the weighing agent erroneously punched 159 instead of 139. After paying the bill amount, I checked the bill and found this error. Immediately, I asked them to refund the extra amount collected rs 21 but the cashier and the manager refused to return the excess collected amount. I was told that since it is the mistake of the weighing staff, she should return the amount. I told them I have not paid the amount to the lady who weighed and sold. So I insisted on returning the excess amount from Reliance Point . But they didn't budge and said NO. Is this the way, Reliance Mart cheat the customer? I want an official apology from the concerned authority and the refund as well. If my grievance is not resolved in 72 hours, I will post the incident on social media. Further I will sue the company by moving the consumer forum.

DETAILS ARE AS FOLLOWS:
Weight 1.052
Rs/kg - 159.00/kg but actual rate 139.00/kg
Total Ra. 167.27

CIN NO. 001100MH1999PLC120563
FSSAI LIC NBR [protected]
Cashier 60512272
Store 2747
Payment Ref no.[protected]
Tax invoice [protected]

Thank you for your best services.

With warm regards

P. KUMARANAN
[protected]