Data is not updated in Codeigniter

I am using a website that is developed in Codeigniter.

The problem that I have is when adding a service or client, since this app is developed for a technical service system for PCs. When you add a client, it shows you a form with the data. You add it, but it does not refresh the list from the previous page and so it goes with everything: with services, service orders, the index, etc.

But refreshing with F5 already refreshes the list of clients, and so it happens with everything: services, users, orders, etc.

I leave you the code of the clients view:

<?php 
if ($this->permission->checkPermission($this->session->userdata('permissao'),'aCliente')) { 
?>

    <a href="<?php 
        echo base_url();
    ?>index.php/clientes/adicionar" class="btn btn-success">
        <i class="icon-plus icon-white"></i> 
        Agregar Cliente
    </a>

<?php
}
?>

<?php
if (!$results) {
?>

        <div class="widget-box">
        <div class="widget-title">
            <span class="icon">
                <i class="icon-user"></i>
            </span>
            <h5>Clientes</h5>

        </div>

        <div class="widget-content nopadding">
            <table class="table table-bordered">
                <thead>
                    <tr>
                        <th>#</th>
                        <th>Nombre</th>
                        <th>Cedula/RUC</th>
                        <th>Teléfono</th>
                        <th>Acción</th>
                    </tr>
                </thead>
                <tbody>
                    <tr>
                        <td colspan="5">Ningún Cliente Registrado</td>
                    </tr>
                </tbody>
            </table>
        </div>
    </div>

<?php 

}else{

?>

<div class="widget-box">
     <div class="widget-title">
        <span class="icon">
            <i class="icon-user"></i>
         </span>
        <h5>Clientes</h5>

     </div>

<div class="widget-content nopadding">


<table class="table table-bordered ">
    <thead>
        <tr>
            <th>#</th>
            <th>Nombre</th>
            <th>Cedula/RUC</th>
            <th>Teléfono</th>
            <th>Acción</th>
        </tr>
    </thead>
    <tbody>
        <?php foreach ($results as $r) {
            echo '<tr>';
            echo '<td>'.$r->idClientes.'</td>';
            echo '<td>'.$r->nomeCliente.'</td>';
            echo '<td>'.$r->documento.'</td>';
            echo '<td>'.$r->c_telefone.'</td>';
            echo '<td>';
            if($this->permission->checkPermission($this->session->userdata('permissao'),'vCliente')){
                echo '<a href="'.base_url().'index.php/clientes/visualizar/'.$r->idClientes.'" style="margin-right: 1%" class="btn tip-top" title="Ver mas detalles"><i class="icon-eye-open"></i></a>'; 
            }
            if($this->permission->checkPermission($this->session->userdata('permissao'),'eCliente')){
                echo '<a href="'.base_url().'index.php/clientes/editar/'.$r->idClientes.'" style="margin-right: 1%" class="btn btn-info tip-top" title="Editar Cliente"><i class="icon-pencil icon-white"></i></a>'; 
            }
            if($this->permission->checkPermission($this->session->userdata('permissao'),'dCliente')){
                echo '<a href="#modal-excluir" role="button" data-toggle="modal" cliente="'.$r->idClientes.'" style="margin-right: 1%" class="btn btn-danger tip-top" title="Eliminar Cliente"><i class="icon-remove icon-white"></i></a>'; 
            }


            echo '</td>';
            echo '</tr>';
        }?>
        <tr>

        </tr>
    </tbody>
</table>
</div>
</div>
<?php echo $this->pagination->create_links();}?>




<!-- Modal -->
<div id="modal-excluir" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
  <form action="<?php echo base_url() ?>index.php/clientes/excluir" method="post" >
  <div class="modal-header">
    <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
    <h5 id="myModalLabel">Eliminar Cliente</h5>
  </div>
  <div class="modal-body">
    <input type="hidden" id="idCliente" name="id" value="" />
    <h5 style="text-align: center">¿Realmente deseas eliminar este cliente y los datos asociados con él (O.S, ventas, ingresos)?</h5>
  </div>
  <div class="modal-footer">
    <button class="btn" data-dismiss="modal" aria-hidden="true">Cancelar</button>
    <button class="btn btn-danger">Eliminar</button>
  </div>
  </form>
</div>






<script type="text/javascript">
$(document).ready(function(){


   $(document).on('click', 'a', function(event) {

        var cliente = $(this).attr('cliente');
        $('#idCliente').val(cliente);

    });

});

</script>