[Djiango]

pawn Код:

new giveplayerid;
format(string, sizeof(string), "%s(%d) Taxi Driver Is On Duty! Type /taxi To Call A Taxi Service!",pname,giveplayerid);

No need for "new giveplayerid" And change "giveplayerid" in the string, to "playerid"
Also you need to get the players name, before creating the string.

pawn Код:

GetPlayerName(playerid, pname, sizeof(pname));

Was also wondering, what ">=1" should do.