HTC — Service is not good. (Please provide my device ASAP or provide me replacement)

Address:

Bangalore, Karnataka

My mobile model is HTC One Dual 802d and it got repaired, the problem is its not getting charge and when i connect to system i got message like Malfunction detected, these problems are came after updating the lollypop. So i gave my mobile to HTC authorized service center in Bangalore its TVS Electronics. I gave my device June 19th and today date is July 14th. Almost 4 weeks completed. When i try to call service center they are not attending my phone call. When i called to Customer care they are telling its in repair status you can call after 48 hrs so till now they are telling same answer t. I wrote lot of mail but no use. Can you please help me to get my device back or provide replacement. My warranty is till July 20th. My Ticket Number: 15INA[protected] IMEI: [protected] Customer Care Number:[protected]