2 most likely possibilities in my experience: Phone plug has been bent/damaged this has happened to us on 2 phones.(most likely an internal wire). It will require service.
2) Cable or wall plug transformer have been damaged and charge is minimal or cut off (happens if the progs get bent or the wire gets kinked or over flexed or pulled hard.
Test each component with a friend's / co-worker's unit that you know is working (or at the store) Replace components as necessary.
If you need further help, I’m available over the phone at https://www.6ya.com/expert/steven_7f54ab9063554f66