Hello! Sorry for the experience you had. We will surely help you with this. Kindly visit your nearest iQOO service center for detection and evaluation. Please carry your handset's bill and take data backup. As our technical experts available in our service center will take care of all your issues responsibly and within an ample time frame.
To locate the service center address: https://www.iqoo.com/in/support/service-center

Please do visit nearby service center and get the device checked.