Pathetic Service from MFC

Mfc sent sms asking to debit my account on 23rd December. I called Mfc & opted out for early debit order date becauseI get paid month end, Even received confirmation email from Mfc that my account will be debited as normal on 30 December. They went ahead & debited my account on 23rd December. This is 2nd year they have repeated. Most pathetic service