Miway Debits me 5 times and noone can explain why

I am clueless on how to refer to my recent case with Miway. i changed my banking details with you in May, you still went forward and debited the wrong account, not once TWICE. I had a conversation with some smart mouth from your organisation who promised me it will be fixed and GUESS WHAT? you went on and double debited me in my new account and yet you told me i had no cover for May. another debit order is lined up for the 2nd of June......what do you guys think i am? my policy number is ***6 please return my money and close the poorly managed insurance account!!!!!