Nokia 5130
Music player not working, camera image very bad quality

I buyed a nokia 5130 in july 5130 up to know i had may problems with that. The quality of camera is very very very bad. music player is not supporting any songs, videos. When im trying to open it is showing a error NOT ENOUGH MEMORY. One more thing is the phone will get tuirn off suddenly. This is very bad . pls suggest me what to do.