Shiprocket — They are scamming by weight discrepancy

Hi.
Im In Texttile business for many years. We sent parcel to all over india from tiruppur. Before we use various couriers like dtdc, Trackon, Maruthi, anjani, etc.. Bt one my customer suggest Shiprocket app.
So im using this app for my booking for nearly 6 months.
When we book the parcel, Their price is comparativly very lower than other courier companies.
So we sent lot of parcels via them. Before sending the parcel we measure Dimensions and weight.
Bt after sometime We noticed that amount debited from our wallet lot of times. When we check the reason it shows weight discrepancy.
They raise this issue after they deliver the parcel, Normally after 10 days of delivery.
They says we measured the dimension and weight wrong, So they charged extra amnt from my wallet silently.
Bt we dont have to do that.
For example we sent 38 round neck tshirts that weights around 9 kgs. Bt after 20 days they says that parcel weights 23 kgs and take extra amount. Now the parcel is already delivered. So we cant Prove.
They are doing this as scam. They take very high amount for small parcels, and they says we are the cheaters by entering wrong weight and dimension.
23kgs / 38 pcs = 600 grams per tshirt.
How pathetic is this. Round neck tshirts weights around 220-260grams.
Here i listed the AWD numbers which they scam:
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