Account NOT in arrears

We have Netstar's devices in 2 vehicles. One was covered by our insurance, but they discontinued that service. At the time I erroneously assumed Netstar would adjust my debit order. They didn't. We went into arrears for a few months, paid the arrears and eventually got them to adjust the debit order. <br> The debit order goes off my account every month, but we are once again being threatened with legal action and on top of that they are sending threatening sms's to our emergency contact. I have tried emailing them. They gave me a contact who is unreachable by phone.<br> Netstar, your customer service sucks. :(