Capfin reaping people off

Capfin debited money on my account and when I called they said I have settled my account on the 27 October 2015 which is I never arranged with them to debit this amount. But I said if it means I have settled the account its fine i don't want to ever do business with them. I have been getting calls everyday they are telling them I am areas and they want me to pay them. When I want them to explain what areas because I have settle the account. I am not getting clear explanation