DHL Express India — Hold my package

Address:

Mumbai India

DHL is holding my package and asking me pay clearance amount 77% but when I asked them about details and all breakdown then they don’t have answer also I asked them notice of clearance but they didn’t provided me anything rather than asking me to pay and send all invoice. I have already sent invoice and all required documents but keep asking send me this and that and Rohit Mishra and Yogesh Parmar in Mumbai office told me that I have to pay money whatever it is. It is like threatening me for my package. But they don’t have any information regards. Please advice