Delhivery — Time Limit of delivery date

Address:

H.no.201 shramik vihar sec 30 faridabad haryana

I would like to draw the attention of the concerned authorities towards the problem of delivery.
I have returned my product some 10 days ago but now it does not reach to the seller, so I did not get my refund. Please make it fast .
I hope this letter is mine act as awakening for all readers and concerned authority towards the my problem
Yours sincerely