Debit Order going off after contract expired

My 36 month contract expired in February 2015, why is the debit order going off??<br> <br> I've tried contacting the finance department numerous times, no luck. I am forever on hold and the call does not get answered. We even made contact with the technician,Mokopa, he also said he'll try to get a consultant to help but this has been carrying on for about 3 months now. There is just no customer service <br> <br> I even pressed the panic button in my car at 7:15am this morning, it is now more than 3 hours later and no-one from Netstar called yet . Also, I disconnected the car battery about 2 weeks ago, Netstar also did not call then - this leads me to believe that the system is faulty, so I'm paying for something that does not work. <br> <br> Please cancel this debit order immediately and refund the amount that has been wrongfully debited from my account for all these months.<br> <br>