Trackon Couriers — Fase Charges against Courier Service

I have been sent a courier from Allahabad to Gurgaon fro Big Bazaar Allahabad. The Trackon servce provider ask me send the courier free of cost as it is attached with Big Bazaar company and later again asks charges for 300/- rs.

As per my knowledge earlier the courier company is attached with store but currently we are not having any tie ups.

Please share the details. For related courier.
Attaching the POD slip.