Malabar Gold & Diamonds — Cheating of gross and net weight

I had exchanged an Malabar diamond earring with gross weight 1.995. The calibration machine was fluctuating between 1.941-1.992 which is huge.

The sales person Muhammed shanif A K considered 1.935 inspite of the fact that the calibration machine didn’t show this figure.

It was raised with the sales person that what he was considering was wrong inspite of that, they have considered 1.935. Later he agreed to consider 1.945 but inspite that during billing they have again considered 1.935.

This is absolute cheating.
I don’t understand why such a reputed organisation cheats consumers during valuation especially when it was their own in-house jewellery which was exchanged. And how is it that they don’t have an accurate calibration machine.

Invoice no: 5106C01IN0058837 from Jayanagar Malabar. Manager name Muhammed shanif A K 34307, who did the billing.