RCS refuses to give statement about money they demand

<p>I opened a Dion Wired account which I closed a few months later. When I closed the account, the Dion Wired account person phoned RCS and got the amount I have to pay to close the account. I have the date and time and person from RCS spoken to.</p> <p> </p> <p>I paid that amount, but since then, RCS keep phoning me to pay more money. They also refuses to give me a statement. I have been in email correspondence with them, and said I would pay if they can give me a statement why I own money. They refuse to give me a statement. I am willing to pay, I only need a statement to show that Dion Wired made a mistake and that RCS is not just randomly trying to extract money from me. If I just pay, what stops them from doing the same thing again in a month or two?</p>