sms systeem werkt niet

<div id="content_top"> </div>


		<div id="content">
<h1 class="titel">SMS Systeem</h1>
<tr><td align="left"><b><font color=yellow><img src=img/ico/img_info.png> SMS Systeem</b></font><br />Kies een land!</tr></td>
</table><table width=100%>
<tr><td align="left"><a href=index.php?p=sms&c=31>Nederlands</a></tr></td>
<tr><td align="left"><a href=index.php?p=sms&c=32>Belgie</a></tr></td>
</table><table width=100%>
<?
if(isset($_POST['buy'])) {
if($_GET['c'] == '31') {
$exist = file_get_contents("https://www.targetpay.com/api/sms-pincode?rtlo=#####&code={$_POST['code']}&keyword=BETAAL+AL&shortcode=3010&country=31");
}
else {
$exist = file_get_contents("https://www.targetpay.com/api/sms-pincode?rtlo=#####&code={$_POST['code']}&keyword=ORDER&shortcode=6638&country=32");
}
if($exist == "000 OK") {
mysql_query("UPDATE `[users]` SET `callcredits`=`callcredits`+'45' WHERE `login`='{$data->login}'");
?>
<tr><td class=mainTxt><b><font color=green><img src=img_goed.png> Je hebt je 45 Credits besteld</font></b></tr></td>
<?
}
else {
?>
<tr><td class=mainTxt><b><font color=red><img src=img_error.png> De betaling is niet voltooid, ERROR(<?=$exist;?>)</font></b></tr></td>
<?
}
}
elseif($_GET['c'] == '31') {
?>
<form method=post>
<tr><td align="left">SMS <font color="red"><b>BETAAL AL</b></font> NAAR <font color="red"><b>3010</b></font><br />Voor 45 Credits<br /><font size="-3"><i>(Kosten: &euro;1.50,- p.o.b.)</i></font></tr></td>


</table><table width=100%>
<tr><td align=left><b>Code:</b><input type=text name=code maxlength="6"><br /><input type=submit name=buy value="Klik hier om verder te gaan."></b></tr></td>


		</div>
		<div id="content_bottom"> </div>
		<?
		error_reporting(E_ALL);
}
elseif($_GET['c'] == '32') {
?>
<div id="content_top"> </div>


		<div id="content">
<form method=post>
<tr><td align="left">SMS <font color="red"><b>ORDER</b></font> NAAR <font color="red"><b>6638</b></font><br />Voor 45 Credits<br /><font size="-3"><i>(Kosten: &euro;1.50,- p.o.b.)</i></font></tr></td>


</table><table width=100%>
<tr><td align=left><b>Code:</b><input type=text name=code maxlength="6"><br /><input type=submit name=buy value="Klik hier om verder te gaan."></b></tr></td>


		</div>
		<div id="content_bottom"> </div>
		<?
		error_reporting(E_ALL);
}
?>