HTC — HTC 620G/ Complaint about poor service

Address:	Dehradun, Uttarakhand, 248001
Website:	No website

I have been using HTC 620G phone since September 2015, recently I faced an inconvenience because of the poor service provided to me, I had a liquid damage in my phone, but I am charged for other extra things as well, and it happened because of the ignorance of customer and technical support showed. They first said that the camera lense is missing, though I already told them that I have it in the fixed form on the battery cover. They gave me another camera when I got it back. My phone was away for 50 days just because of this and no right solution was provided, still I have not provided with the refund of lense, in fact, they said no to process any refund for this, they charged me 4115/- as the total cost.
It was a pathetic experience with them.