DHL Express India — return of courier

Address:	421501
Website:	DHL complaint

I had sent a courier consisting of 5 kg of food stuffs and a mobile phone with charger through dtdc ambernath branch. For reasons best known to them they handed over to dhl courier services. Tiday shipment was sent back by dhl to my residence and a custom charge of 9032 rs levied on it. Reasin being salted peanuts not allowed.
Now isn't it the responsibility of courier service provider to not include peanuts. Invoice has it mentioned, then why did they accept it?
Lot of inconvenience has been caused to my son for not receiving mobile phone on time, foodstuffs are spoilt, financial loss and mental harassment for me.
I request a sensitive and sensible solution for this problem at the earliest.
Thanking you