Plugged in charger but wont charge?

Literally plugged it in it started charging, switched chargers because the one I had in was too short. Then it wouldn't charge. Tried different chargers with original charging dock, even tried different charging docks, different outlets!! I've tried everything. I had to send it in to get the charger port replaced haven't even had it back a month. It is now drained it shut off after saying 0% so now its completely dead! HEEELLPPP LOL please

Also the charger works in my phone so its not any of the chargers