The incompetance continues

the incompetance of this company continues to amaze me. i changed my banking details and was clearly adviced the new debit order will only be active from end of june therefore i must please make a eft payment for this months instalment which i did and low and behold after my eft they debit the amount again. there talk nevervever fits there walk. in my opinion this theft as you took money that doesnt belong to you with out my agreement to it. i have asked countless times for the manager or head of departments details but this request is just avoided enough is enough im taking this further!!!!