HTC India — Poor quality of warranty service and poor quality of phone

Address:

Chennai, Tamil Nadu, 600089

I bought 1 htc 620g phone 10 months back within 5 months screen got damaged by itself i gave it to htc warranty services at tvs electronics nugambakkam chennai, they took 1 month to repair then they gave me phone which was 620g but not mine,
One week back they returned me the phone but now battery has started to malfunction . I think they exchanged my battery cause the manufacturing date of my battery is 10/11/14 while that of phone is 15 sept 2015

Imei - [protected]
S/n - lc58vy651549