Money Taken WIthout Consent

I wish to draw your attention to the fact that the organization has in 2 different months made a debit order to my account after I paid the with an EFT, because my debit order did not go through. The say it is part of their policy. I am threatening to leave them because of their practices. The Automobile association should refund the money immediately, but they take 2 weeks to pay out. I have a tight budget like most other people on this and other sites.