iPhone 12 Pro Max Charging port issue?

Hey there,

So yesterday ( Jan 5th ) at 6:03 PM EST I got an iPhone 12 Pro Max from Tellus ( Brand new ) on contract for my business, I didn't use the phone until earlier this afternoon (Jan 6th) upon trying to charge my phone it was working I left it for about 5 mins an when I came back the charge icon was gone, I unplugged an plugged back in - still nothing.

So I tried another cord nothing, So I tried my old one and still nothing.

I tried all of these cords with my AirPods & my iPad and all chargers work..

When I tried my mother's knock off charger, The phone began to charge but only when a certain side of the knock off charger was facing the screen.

Does anyone know what the reason could be? It's not even 2 days old, barely used for 24 hours ... I'm so confused.