HTC India — HTC Desire 620g battery not replaced after 3 months in service centre

Address:

Kolkata, West Bengal, 700054

Sir/madam,
I would like to draw your attention to my case that i have deposited my htc desire 620g in htc service centre, (4, basanti colony, ghose bagan, kolkata, west bengal 700054) on 16 th january 2017 for repair and replacement of battery. After several visits and tedious requests they didn't took any action. After 3 months of custody of my phone they just said it can't be replaced and they returned it to me and asked to replace it by any fake battery. It is highly frustating and unprofessional.
If you kindly look into this issue and take the actions necessary i would be highly grateful to you.
Thanking you,
Anindya subhra adhikary

Vill - hijalpukuria green park
P. O. Hijalpukuria habra
North 24 parganas
Pin-743271 (West bengal)

Contact number: [protected]
Email id: [protected]@gmail, com