OnePlus India — Nord 2 Complaint

Address:

Sijil M S, Madarakkal, Nayarambalam, Ernakulam, Kerala 682509

I bought the OnePlus Nord 2 in August. The next month I got an update and it started having problems. Camera clarity changed, it looks like a poor camera & the phone is hang. I gone to the service center and they update the phone again.
Then the next problem started. It is that battery drained issue. Battery charge decreased In the night time around 20% and also the hanging issue continued.

Again I visit service center. They will said that the phone will keep & cross check the phone. In 2 months 4 times I go to the service center.