Ignoring emails but remain arrogant

I had a vehicle fitted with a Netstar tracking device. I transferred this from a dealer when I purchased a vehicle (BMW X3 BMW Auto Menlyn). I sold this vehicle in September 2015. I sent an email to Netstar and they confirmed my cancellation on 15 Sept 2015 and the cancellation was processed. I then still paid an amount on 01 Oct and after another email regarding the notice paid again on 16 Oct.<br> This month I again receive notice that the debit order has been rejected. This cancellation was processed as confirmed. I have a list of notifications that my emails were deleted without being read by the customer services team.<br> How arrogant to send me sms messages when my communications has been deleted without being read.<br> I will also communicate my issues to the media where my proof of email deleted without even reading it can be shown to the public.<br> I am grateful my new vehicle has a device from a different vendor than Netstar who will never see another contract with me after this incident