I haven't had this problem with my NOKIA 3 - does it charge once it's off? Did you contact customer support?
Do you have the right charger and correct one or is this via a USB charger as I have notice this with some chargers via USB in cars,does your phone actually go off or just have black screen?? You can press the keys volume up/down and see if you can hear sound. If its switched off you can simply press the volume up and power key in until you get a vibration and see the android logo come back on screen and let go.