Please assist in closing my bank account

Please assist with moving closing my bank account as I'm going to be moving everything over to my new bank account I requested that a debit order of an online purchase be canceled a few months back and every time since then the debit order has been running the vehicle was ****** on the 9th of June and I was paid out for the vehicle in July which reflects in my account but I've been billed R260 since that time contacted fnb to assist in stopping the service and they couldn't help only advised that I go back to the service provider to cancel the purchase which the provider has advised was canceled now I'm being told by fnb to cancel my card which is not what I want to hear so I rather went to a new bank since everything fnb does the exact same thing, not good enough to get vehicle financing from your company but not also willing to service me properly as a client