Miway Insurance - Unauthorised Debit Orders whenever they please...

I am very dissapointed in Miway Insurance. I accepted insurance cover from them on 15/11/2018 to be implemented only on 01/12/2018 with debit order date for 01/12/2018 for collection of first premium. On 19/11/2018 I phoned to cancel policy as we have decided to insure elsewhere. I finally got confirmation on cancellation on 22/11/2018 in writing that the insurance policy was not taken up. On 23/11/2018 an unauthorized debit order for their premium amount went off my bank account. I went to the bank to have it reversed where I was told they cannot reverse it as they cannot locate the debit order although the debit order transaction appears on my statement. They advised me to contact Miway insurance which I did directly from Absa Bank. The representative told me that I must go to the bank to reverse it. I told the lady I am standing inside the bank where I was told they cannot reverse it and I should speak to Miway. She then said I must send my bank statement and request a refund but I must know that it will not happen soon as it takes time. Well, it did not take them much time to offer me a policy, neither did it take them much time to debit my account without my authorization on 23/11/2018 and it also did not take much time to assure me that they don't care much for the fact that I am upset about money being taken from me by them with no authorization to do so from me! Never in my life have I been so dissapointed with any other insurance company. I have in the meanwhile sent them an email with copy of my bank statement for my refund (which I will probably never see) requesting answers on who gave them permission to debit my account on the 23rd November after I have even cancelled my policy. The read receipt on my email came through and now hours later still absolutely no reply from Miway.