bunch of *******

highly disgusted with these people, paid up our contract 2 years ago, and have never gone back to them, out of the blue these ******* put a debit order through onto my account and are now claiming I owe them over R12000????? they are totally out of their minds, who gives these ******* the right to just start deducting money out of my account for no reason whatsoever. Never had any correspondence nothing after I paid them in full. Just a bunch of *******.