blossom

hi everybody i changed my number from my old LG handset to classic 231 this saturday. and now the battery is low and when i put to charge it is not getting charged. tried all the instructions in the manual. there is power supply coz the light is red and i have fixed it properly because i heard a clicking sound. what might be the problem? help me soon because the battery is low and i have tried everything i could to charge it but of no use thank you