HTC — Mobile service problem

Address:

Dharwad, Karnataka

Sir
I have purchased new htc desire 820 dual Sim be fore 3 months due to some miner problem i have given may mobile to the service center now they have replid on mail
they have made 15800 rupees bill for miner issues even that mobile under warranty so now i am not ready to make the payment so kindly issue new mobile or same mobile with repair

Unit Serial No CC51PYC00737
Brand HTC
Model Desire 820 dual sim
Unit Owner Owner Name: ASIF H
Address: HUBLI HUBLI
HUBLI, DHARWAD, ZipCode: 580020,
KARNATAK, INDIA
Phone: [protected]
Cell: [protected]
Contact No:
email: [protected]@gmail.com