Debiting my account not as per the agreement

Auto elite has debited my account on the 19 th jan and I have requested them to debit my account on the specific date and now I have two unpaid on my bank account I want to cancel this policy as this is not the first incident where my bank account was debited on which ever date they decide to debit and I want all my premiums refunddd to me as I will be dealing with an *********** company that messes with customer and to be told that there is nothing that they can do about the unpaid on my bank profile ,I called spoke to a lady Simmons who told me that she cannot do anything about the unpaid on my profile and the requested to speak to a manager Lerato mkhize who told me she cannot refund me my money but the unpaid , so I am a customer who will always be worried about them messing with my bank account