SoapFault exception: [soapenv:Server.generalException] bad credentials

<?php

//Instantiate a new SOAP client

$login = 'wmid'; $password = 'password'; $client = new SoapClient('http://ift.tt/1yDQrY7', array('login' => $login, 'password' => $password, 'features' => SOAP_USE_XSI_ARRAY_TYPE));

//Create an End User: $client->createUser(array)

$user = array( 'address' => '80, picninc park', //varchar(64)

    'city'          => 'ahmedabad',          //varchar(32)
    'country'       => 'IN',             //varchar(2) Use ISO 3166
    'email'         => 'raj@gmail.com',  //varchar(64)
    'firstName'     => 'Raj',            //varchar(32)
    'lastName'      => 'Yadav',          //varchar(32)
    'password'      => 'rajkeshar',          //varchar(32) required 
    'phone'         => '9016643264',             //varchar(24)
'products'      => '14 days',        //array of strings
    'state'         => 'GJ',             //varchar(2) default: US
    'username'      => 'rajkeshar',      //varchar(50) required
    'wemail'        => 'raj@gmail.com',//varchar(64)
    'zip'           => '382440',             //varchar(15)
'clientGroupId' => '12',         //varchar(15)
'proId'     => '1'//int(10) if proId specified by quotemedia, else omit
);


try{
    $client->createUser($user);
}   
catch (SoapFault $soapFault){
    echo $soapFault;
}

//Retrieve an End User: $client->getUser(string username)

try{
    $getClient = $client->GetUser('username');
    foreach($getClient as $key => $value)
        echo "{$key}:{$value}<br>";
}
catch (SoapFault $soapFault){
    echo $soapFault;
}

//Update an End User:

try{
    $client->updateUserInformation($user);
}   
catch (SoapFault $soapFault){
    echo $soapFault;
}



try{
    $client->updateUser($user);
}   
catch (SoapFault $soapFault){
    echo $soapFault;
}

//Cancel an End User's products

try{
    $client->cancelUser($user);
}   
catch (SoapFault $soapFault){
    echo $soapFault;
}

//Get all available products (packages)

try{
    $pkgs = $client->getAllPackages($login);

    $loop = sizeof($pkgs);
    for($i=0; $i<$loop; $i++){
        print $pkgs[$i]->retailPackageCode . '&nbsp;('
            . $pkgs[$i]->displayName . ')<br>';
    }
}
catch (SoapFault $soapFault){
    echo $soapFault;
}

I am getting error

SoapFault exception: [soapenv:Server.generalException] bad credentials in /home/wwwmnsqu/public_html/PHP5_Samples.php:73 Stack trace: #0 /home/wwwmnsqu/public_html/PHP5_Samples.php(73): SoapClient->__call('createUser', Array) #1 /home/wwwmnsqu/public_html/PHP5_Samples.php(73): SoapClient->createUser(Array) #2 {main}SoapFault exception: [soapenv:Server.generalException] bad credentials in /home/wwwmnsqu/public_html/PHP5_Samples.php:84 Stack trace: #0 /home/wwwmnsqu/public_html/PHP5_Samples.php(84): SoapClient->__call('GetUser', Array) #1 /home/wwwmnsqu/public_html/PHP5_Samples.php(84): SoapClient->GetUser('username') #2 {main}SoapFault exception: [soapenv:Server.generalException] bad credentials in /home/wwwmnsqu/public_html/PHP5_Samples.php:101 Stack trace: #0 /home/wwwmnsqu/public_html/PHP5_Samples.php(101): SoapClient->__call('updateUserInfor...', Array) #1 /home/wwwmnsqu/public_html/PHP5_Samples.php(101): SoapClient->updateUserInformation(Array) #2 {main}SoapFault exception: [soapenv:Server.generalException] bad credentials in /home/wwwmnsqu/public_html/PHP5_Samples.php:115 Stack trace: #0 /home/wwwmnsqu/public_html/PHP5_Samples.php(115): SoapClient->__call('updateUser', Array) #1 /home/wwwmnsqu/public_html/PHP5_Samples.php(115): SoapClient->updateUser(Array) #2 {main}SoapFault exception: [soapenv:Server.generalException] bad credentials in /home/wwwmnsqu/public_html/PHP5_Samples.php:127 Stack trace: #0 /home/wwwmnsqu/public_html/PHP5_Samples.php(127): SoapClient->__call('cancelUser', Array) #1 /home/wwwmnsqu/public_html/PHP5_Samples.php(127): SoapClient->cancelUser(Array) #2 {main}SoapFault exception: [soapenv:Server.generalException] bad credentials in /home/wwwmnsqu/public_html/PHP5_Samples.php:138 Stack trace: #0 /home/wwwmnsqu/public_html/PHP5_Samples.php(138): SoapClient->__call('getAllPackages', Array) #1 /home/wwwmnsqu/public_html/PHP5_Samples.php(138): SoapClient->getAllPackages('wmid') #2 {main}

Any help will be more valuable.

Thanks in advance.