Terrible service from FNB

I have paid up my smart spend loan on Thursday, 28 September 2017. On Friday, 29 September 2017 the full amount of the monthly premium had been deducted from my account. I called FNB Loans to reverse the charge and was told it'll take between 24 - 48 hours. Still nothing on Monday, 02 october 2017 so I called again and the agent told me to wait for Tuesday as Saturday is not considered a working day. On Wednesday, 04 October I called again to find out about the reversal only to be told that it'll take 24 - 48 "working hours" It's already 4 days and still my money has not been reversed back to my account!! FNB is such a disappointment, I will be closing my account and moving to another bank!