Based on your comments, my first concern would be to make sure that charger is for your phone specifically. If it is then I would try to exchange it for another one as it may be defective. Wal-mart is usually good to exchange things. Once you get another charger try and see if there is an immediate improvement. If it works then you know.If it does not see if you can find another battery for your phone that you can try and see if it takes a charge. Again if that works then it 's the battery. If not have the phone checked by your service provider.This does sound a lot like a battery problem though. Batteries usually last around 2 years, but that is not always the case. If it is bad it won't take a charge no matter what you do. If the charger turns out to be the wrong one it could have ruined the battery.If you do need a battery
www.batteries4less.com is a good source.