[ISmokezU]

It could probably be because your pCompany Array is at 0 or over 3, Your code only checks it if it is between 1 - 3.
I have re-write your code and add a print function show us what it prints:

PHP код:

forward unloading(playerid); 
public unloading(playerid) 
{ 
    new gString[128], moneymsg[20], playerscore = GetPlayerScore(playerid);
    TogglePlayerControllable(playerid, 1); 
    SendClientMessage(playerid, COLOR_GREEN, "Well done! You completed the mission!");//sends the player a message 
    format(gString, sizeof gString, "%s has completed mission: %s", pName(playerid), iMissionText[playerid]);//formats the message 
    SendClientMessageToAll(COLOR_GREEN, gString);//sends everyone message saying player completed mission 
    MissionStatus[playerid] = 0;//sets the mission status of the player to '0' 
     
    SetPlayerScore(playerid, playerscore + 1 ); 
    GivePlayerMoney(playerid, iPay[playerid]); 
    format(moneymsg, sizeof moneymsg, "~y~+%d~g~$", iPay[playerid]); 
    GameTextForPlayer(playerid, moneymsg, 5000, 1);

    printf("Array pCompany: %i", PlayerInfo[playerid][pCompany]); // added for debugging

    if(PlayerInfo[playerid][pCompany] == 1) 
    { 
        SendClientMessage(playerid, COL_POSITIVE, "Company bonus money: 3000$"); 
        GivePlayerMoney(playerid, 3000); 
    } 
    else if(PlayerInfo[playerid][pCompany] == 2) 
    { 
        SendClientMessage(playerid, COL_POSITIVE, "Company bonus money: 6000$"); 
        GivePlayerMoney(playerid, 6000); 
    } 
    else if(PlayerInfo[playerid][pCompany] == 3) 
    { 
        SendClientMessage(playerid, COL_POSITIVE, "Company bonus money: 12000$"); 
        GivePlayerMoney(playerid, 12000); 
    } 
    return true; 
}