510bey

recently I've been experiencing problems with my key remote so i brought it into Honda and a service manager told me he have an extra key he can give me but needed programming. The tech guy brought out a computer and began to program but the key that was given didn't work. now all of my keys don't work. i can start my car but I can't alarm my car or automatically lock/unlock my care. I also have a KARR alarm system. several guys tried to program my original keys but nothing to avail. What went wrong? How can i get my keys to work again?