Mechanic & Car Service Job - Khayelitsha, WC, 7784

I wish to know what could be the problem with my car. I own a Ford Fiesta 2010. My key doesn`t have buttons, I lock manually. For a month now I can`t lock the doors. Only the driver`s door works. The other 3 doors and a boot door don`t lock. Infact the boot remains locked. Please help.