My Money disappeared

Money was taken from my account by this bank today around 08:54 and I called in and spoke to Rosline Twala around 10:00 this morning, she promised to call me back with reasons for this inconvenience which she never did until I called back around 15:50 only to speak to an arrogant lady who didn’t even want to listen to a thing I said, she told me to lay a complaint with the complaints department, I requested her to put me through to that department and I was put on hold for about 32 minutes before she hanged up. This is extremely bad I have bills to pay and money cannot just be taken from my account without me knowing about it, money should be safe in the bank hence I pay fees for the bank to administer my money, now what must one do if the bank is the one taking my money without notice and no valid explanation. I need my money I need to pay bills.