How to hold Delhi customs accountable

The ladies purse and men's watch and travel diary, all under US 50 dollars, are the items which were never cleared by the Delhi customs department. Moreover, they were asking for Rs. 2000 for "clearance"  on the items which were not eligible to be taxed in the first place as they were small value items gifted to us. Not only they did not give the items to us for refusing to pay custom "fees", they never returned the items to the sender. 

Similarly, my 5 US dollars pendrive was never cleared by them and the sender did not receive the item back. 

Indian government enables them to scam people in the open day light as evidenced by their Google Maps reviews. Everyone is facing the problems. They are crooks.