India Post — asking for additional money to deliver international gift package

Address:

Thane, Maharashtra, 421202

Dear sir/madam,

My name is mrs gayathri apoorv have an grievance against the postal dombivili (W), maharastra postal service. I had sent a gift parcel from wichita, united states as a raksha-bandhan parcel. Which contains two shirts, nuts, sweet box, two rakhi, baby girl dress, 3 baby tooth paste. All the above item cost estimated was $102 which is about indian rs 6, 536. I had already paid postal charges of $90 in usa.
Now the local dombivili (W) postal service refused to hand over the parcel to my family who stay in dombivili (East), mumbai, maharastra.

Product tracking code:- (Ch[protected]us).
Reason given :- only by paying rs 3, 643 my family can have it. They said custom and duty had told to charge it in name of gst.
I had called them 3 times and was given with same reply and said they would return the parcel. To customs and duty.
I have question? India is charging gst for exporting heavy duty machine but not on gifts. Secondly, custom and duty is only for importing good not on gifts that too less than rs 10, 000 is exempted. Then why then my family has to bear this costing of nearly 50% tax on what basis for worth of product rs 6, 536.

India family address:- a/ 2 datta prakash sant nam dev path, road no2, dombivili (E), mumbai, maharastra. 421201.
Contact:[protected], krishnan parthasarathy :- [protected].
I request to take necessary action and do the needful to deliver as soon as possible the goods in it completeness to my family.