Debit order still kicking for no provision of service regardless of informing NETSTAR

I informed NESTAR https://www.netstar.co.za/ to refund me (through an e-mail and telephonically) as they carried on debiting funds for the tracker which was no longer in existence due to the car being written off 4 months ago. They even debited again last week.

As such the accounts department seems problematic. As l have exhausted various channels l am still to investigate further to get my refund at a minimum time.

It is so that that someone at NETSTAR seems to neglect what needs to be done.