Khazana Jewellery — old gold exchange amount difference

Address:

Kurnool, Andhra Pradesh, 518222

I have sell the old gold @ khazana jewellery from kurnool branch with 31.28 gms of 22k on 22/10/2017 of gram rate 2830 then the amount was 88522 but the invoice (56pi - 412 invoice number.) has given to me with an amount of 85, 879 the difference amount was 2643.00. Even i have called to kurnool branch they have not responded.
Can i have y the difference was given in invoice...?
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