MFC Double debits your account

For the second month now Mfc has double debited my bank account using their Naedo system. And on the 2nd of the month again I was debited. This is imunexeptable and very unsettling. This reflects badly on my credit profile. And they take 2 weeks to re emburs me. Which means I cannot fulfill my other monthly responsibilities. Dont use this company. They not doing business the right way.