The worst bank ever!!!!!!

I am highly disappointed and disgusted in your service. I took out a revolving loan in May and was still able to withdraw funds until the end of July. Each month I left funds in my account for you to debit my account but nothing went off. Also no one called me to inform me of anything. I approved the debit orders but nothing went off. At the end of August my first payment went off after I took out the last funds in July. Mind you the funds went off comfortably. Today I receive a call advising me my account is in areas for one month. HOW. When there was funds in my account that could be debited but this did not happen. No one called me until today to say my account is in arrears. Now you want to add a amount ontop of my monthly instalment as if this is my fault?! It is absolutely ridiculous. With the high interest rate and repayment I now have to pay more because YOU did not debit my account . YOU did not contact me until Today. My app does not even show my account is in areas but according to you it is. Which I can not understand for the life of me! At this point I feel like moving banks I have had enough of your terrible service. An apology is not good enough anymore! Worst experience ever.