It may be that I am moisreading the punctuation, but I take it you are complaining about the service centre being 'crack' (cr*p?): "my navigation has crack screen service centre" which you are giving to expensive pals (friends) "to expensive pls", from whom you have obtained a cheap screen.
Or did you perhaps mean: "My satellite navigation has a cracked screen. The service centre is too expensive. How can I get a cheap screen? Thanks."
Punctuation and capitals do help a lot.
Pedant, February 2008
