ECFinance / ECLoans *****ing my money

ECFinance / ECLoans are *****S! I have cancelled and unsubscribed numerical times from their useless service and I receive absolute no feedback from this company, nobody answers your requests to unsubscribe but every now and again they attempt debit orders on your account. It feels like my hands are cutoff, they are *****ing my money and have no right to do so. You cant unsubscribe from them, what can I do???