Unauthorised Debit Order

Truly disgusted. HDL Trading debited my account twice of R350.00 at the end of July and now they are trying to debit my account again for another R99.00. I have not given anyone permission to do so. When calling, the lady tells me that my husband completed an online application and the R350.00 if for admin fees and the R99.00 is the installments every month. No-one from this company has been in contact with myself nor my husband. They refuse to take my bank details off of their system so I have had to go into the bank to block them and reported them to higher authority. This is nonsense.