Micromax Informatics — My screen is flickering and ticking while it using and automatically open the app even though I am not performing any action

My screen is flickering and strucking, always freezing and not working well, If I opened any app it will freezing, Hanging. I am facing this issue after recent updation given by micromax can u please resolve this issue. I am facing this issue Regularly. I have purchased this mobile because It is Indian Brand and I am set aside all the negative comments given by my well-wishers but It proves that I am taking wrong decisions by purchasing this mobile. Hopefully You are understand my situation and resolve this issue. Thank you and with regards