bb 9900 camera not working

Keypad not working bold 9900my blackberry 9900 keypad has stopped working. never not love you touch screen is working. never not love you i dont know what to do i have a password for phon Blackberry 9900 screen works buttons dont My blackberry keys aren`t working right the s button is super glitchy when i press it it doesn`t work when i don`t press it s`s everywhere?