Hi everyone i was wondering if you could help me.

I have a 2006 Jazz, which does not have remote central locking. It all started with my drivers side door, it suddenly stoped working, so i started using the passenger side to unlock all doors..
Few months down the passenger one failed. Which left me to use the boot lock mechanism to unlock all doors through central locking. However today this also decided to let me down. Which has left me in a pickle. I have been meaning to repair the locks, but due to work commitments i havent had the time.
I have researched to no success, apart from its a common problem?
Any help or ideas would be much appreciated.
Thanks
Ricci