Debit Nightmare

I pay either 3 or 6 months in advance. I have contacted them many times to resolve the monthly attempted debits ,which they promise to halt but surprisingly the following month its the same problem again .You once debited when I owed you nothing and I had to wait until you wanted to return my money .It's unprofessional and unpleasant . Your accounts department asked I pay a certain amount to set my account on a 3 month billing system, which I did but monthly I have to fight with you over the same thing over and over again .

My payment history shows I don't do month to month debits and I always pay in advance. Monthly it's me who has to pay for unsuccessful debits WHEN I OWE YOU NOTHING !!!!

You are not running a ****a shop ,please be professional!