Refund not received

Hi<br> <br> I have cancelled my contract with ADT. I received notification of the effective date of the cancellation. The debit order was still processed. Upon investigation with ADT it was seen as processed incorrectly. The amount was to be refunded in 3 days, ( being the 4 March 2016). It was never processed. I called ADT twice a week from thereron , and Silas has never returned my call. I'm still waiting for the refund and I call ADT every few days. <br>