Xiaomi India — mi note 7 pro (6gb ram, 64gb internal memory) has again showing some problems.

My phone (Redmi note 7 pro 6gb ram, 64gb internal memory) after service. It's problems are not at all over. So kindly exchange my mobile phone. And i also emailed before with some video clips but there is no proper reply from your side. So please do exchange my mobile phone. Below i has mentioned the email which i emailed before.
(On (03/08/2019) i bought a note 7 pro (6gb ram, 64gb rom) in chennai, ambathur at rr mobiles.
Unfortunatly your product has not performed well due to some malfunctioning like hanging, display not working well, i went to your service center but they didn't respond well to me. So, i prefer to exchange that mobile to your esteemed company, this i have used only 10 days. So, please you need to exchange my product).