FNB Loans

I am seriously FED UP with FNB! From their royal **** up with switching my salary and debit orders from one FNB account to another which took 4 months, until I eventually decided to leave their *********** bank to another bank. I have managed to switch all of my debit orders plus salary myself, but I can't switch FNB's loan! I have called and emailed a request to change my details - no feedback! I phoned them from last week saturday and sat on the phone for almost an hour. Again early this week, no response! Today I phone them and their phone has a bad line! If FNB charges me for the debit order not going through after all the attempts I have made to change my details, I will ****ing lose my ****!