Unhappy touch screen error

Hello, i am using a rooted micromax a114(canvas 2.2) today i just faced a very big glitch and it is frustrating me.
When i plug in me charger to my cell, it automaticaly starts reciving multiple touches all around the screen while i disn't tap it. First i thought it might due to voltage in socket but when i just plugged the wire without turning mains on, it still behaved same. Please help me. I can't use my phone while charging i don't want it to grow further.