Here is a tip. Present your problem like this

#!/usr/bin/perl --

use strict;
use warnings;
use CGI::FormBuilder;
my $form = CGI::FormBuilder->new(template => 'test.tmpl');

my @loop_data = DATA::DUMPER OUTPUT HERE!!!!!;
print 'wrong output ', $template->tmpl_param(PHONES => \@loop_data);
__END__
wrong output here
[download]

and explain how the wrong output you receive differs from what you want.