Pathetic service

In may I contacted Csurance to change the banking details of my insuance policy after much waiting the lady told me that my details were updated and everything was fine. On the 3rd of june I received a sms saying my insurance was cancelled due to unpaid debits. When I called it was found that the debit did not go out because of an error on their part but an agreement was reached that a double debit would be done on the 30th of june to rectify the problem. We are now in july my insurance is still cancelled the debits have not gone off, I cannot understand what is so hard about updating a persons account details. It seems the staff at csurance are extremely ***********