Xiaomi India — face unlock issue on xiaomi mi note 6 pro

Address:

Bhopal, Madhya Pradesh, 462001

I purchased the xiaomi mi note 6 pro on february 2, 2019. The mobile's face unlock feature is defected as it is getting unlocked by my brother's face too. This has lead to privacy and data leaking resulting in reputation decline and low self esteem in my opion. This has lead to mental harassment too and want consumer forum to take appropriate action in this regard.