you can do it urself.
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take the brand name of ur lock, go to a locksmith store, you can find the inner parts with keys.
7 S3 K7 M4 a: }) U' [change the inner parts, u will be good, it is much cheaper than replace the whole locks." m C- `; {( ^ n5 W- X
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if it is complicated locks or u have 3-4 locks need to replace, call the locksmith store.! t z) |: M. f* F# L W
u can find the number in yellow page, choose the one which near you. |