Coolpad India — coolpad note 5 lite phone

Address:

A 24 state bank colony, gayatri puram, behind nirmala convent, kursi road, lucknow., Lucknow, Uttar Pradesh, 226021

The fingerprint sensor of my phone is not working and the app used to modify fingerprint settings has disappeared.
And the microphone of my phone is not working well. During a call the person on the other side cannot hear my voice even if the network is good.
What should i do in order to resolve these problems? Pleas attend this complaint as soon as possible.