while (<DATAFILE>)
{
    $TRACK = $_;
    chomp ($TRACK);
    $pager = $_;
    chomp ($pager);
    $service = $_;
    chomp ($service);
}

##</code><code>##

open (DATAFILE, $datafile) or die "Input data not found.\n";
chomp ($TRACK   = <DATAFILE>);
chomp ($pager   = <DATAFILE>);
chomp ($service = <DATAFILE>);