charger into the port of the tablet its hard to put in

So i have a samsung galaxy note pro 12.2 model is smp900 and it said it was charging but it wasnt, also it went dead and the problem is that when i try putting in the usb charger into the port of the tablet its hard to put in and it goes in eventuallly but the tablet doesnt respond and its dead. I really need a solution to this, is there somrthing wrong with the charging port idk help plzz.ty