Samsung Galaxy Alpha Screen problem

Hello everyone, this happened just today. I was using my galaxy alpha AT&T and all of a sudden the screen starting glitching and jumping. I was quite shocked because I bought this phone a few days ago. Although the phone is not brand new but the vendor told me that it's completely fine. Anyhow, I pressed the power button and waited for a few seconds then turned the screen back on. This time the screen was fine but after a few seconds of usage the problem started again. Now i read on the internet that this is not a screen issue but rather its associated with phone's charging port but I'm not sure. And another interesting thing is that the screen shots are completely fine and there are no signs of glitching or flickering. Secondly also note that I was experiencing the famous "cannot charge because battery is too cold!" message and I believe that this problem is also associated with the charging port. So please if anyone is familiar with this problem then guide me. Here a video link that shows what's happening to my screen
http://ift.tt/2cvgLTT

from xda-developers http://ift.tt/2bVgtjS
via IFTTT