HTC — bad service and using bad products in high rated phones.

Address:

Patna, Bihar

i brought htc desire 816g on 29 dec 2014 .on 13 june 2015 its start not working properly its unable to charge. i give the phone to service center Bihar (patna) kankarbag .they return my phone on 30 june 2015.and again the same problem is going on 9 july 2015 they ttok the phone and says to change the lower board and on 15 july 2015 i call the service center they said that the work is not done.and one of them engineer talk in very ruidly manner please take some issue because only in 9 days for same problem is done. what the hell they done.