Pantech Duo problem.

So, I was using my phone and I set it down, and walked away.
I went back to check it and the screen wouldnt light up.
Sometimes it freezes and stuff so I waited, and waited and waittted.
Nothing ever came on. I took out the battery and put it back in. nothing. tried to charge it, nothing. I took the battery out, while it was plugged in and it told me there was a battery error, so it knows its charging.
I dont know whats up. I let it sit out overnight incase it got wet, but no such luck on it working.
Any help?

You should check your AT&T upgrade eligibility and if you are eligible, I'd consider getting a new phone.

One day, I plugged my phone into charge and when I went to use it again, it wouldn't turn on. So I got a new battery. Everything worked fine until I charged it again... it wouldn't turn on. So I bought another battery. Again everything worked fine until I had to charge it again. Of course, it will not turn on again. It won't even turn on with the battery out. Could it be a charger problem?