I lost the charger for my Audiovox 9900, so my parents got a new one at walmart. it worked fine for the first three days, but now, whenever i plug it in, it gives me an error message and turns itself off. nothing gets charged. whats wrong? If it the phone, the battery, the charger, or a combo of them?Also, the Get It Now feacture never worked, though i can play tetris with it (I got the phone off ebay with all bought ringtones and one bought game. also i have sony music box but it wont work)