No Apology for their mistake

Where to start. I changed banks and submitted the change of debit order with FNB. The 1st month the debit order did not go off. I had to phone them to ask to take there money as I get on keeping SMS that I am in arrears (NOT MY FAULT!) Because of this FNB took away my flexi option from my home loan without any notification. I have mailed many times. Forms I had to fill in then I was given the wrong form. And i all this they never apologized for their mistake. Just terrible service with no one being able to help me. I think this is 2 weeks later and I received a call and still no apology from FNB. You cost me time and yet you make it sound like I am at fault when you could not simply change a debit order to go off at the correct time. No I have to send in another form (3rd one). I am really over bad service. As soon as I can I am changing my home loan to a different bank.