Unauthorized debit orders

They are messing up my business account and credit score, putting my business at risk 1.debited business account during month with unauthorized debit amount, later apologized and promised to refund. 2 sometimes there is no money in the account and bank charges me for unpaid transactions 3.debited pro rata amount even if quote was not accepted 4 currently budget insurance debit order returned because miway debited money, i called them and wasted money and they apologized and promised to sort that out 5.is up 3 times this happening and my business runs with cash 6. If they take money in my account and I'm unable to operate because of them Business name Mohlahisi Holdings ***