DHL Express India — Payment Deferment Charges(Custom Clearance)

It is in reference to DHL Shipment#[protected]. On arrival at Mumbai port, I was informed about Custom Duty Assessment which was INR 12, 659 on 4 Feb 22, Evidence Attached as Appendix A. I even called up customer service and was not informed about any additional fees. On 07 Feb 22, I again called them to confirm if any action/payment was to be done at my end and I was informed that no action was required. On 09 Feb, I am being informed that I have to pay INR 13, 667 Evidence is attached as Appendix B. I was informed that Payment Deferment Charges have been levied. I was not informed about any such charges earlier. There was no transparency in billing and is being used to kind of blackmail as "Pay 13667 and get your package". Request resolution.