Direct Axis service not up to standard

Kindly take note that I have accidently transferred R9500.00 from my FNB Cheque account into my Direct Axis loan account on the 1st of November 2018. I have phone FNB and they informed me that they have escalated the query to Direct Axis to refund the money, but so far no payments was refund to me and already 21days had passed. Last week Rene at Direct Axis informed me that it will take 2 work days for my money to be paid back in my account but when I came in contact again with her she informed me it is going to take 2 more working days she said the money will be paid back to me on the 22nd of November 2018, but when I have send another email today to follow up on the refund she informed me that the monies will only be paid back to me in next week. I cannot belief a word they are saying anymore. Since day one that I spoke to FNB as well they have also gave me false hope for my monies to be paid back to me, they said that they have logged a query with Direct Axis and that it will take 3-4 working days for the money t be paid back. Every time when I spoke to FNB there story also changed for my money to be paid back. How can it take so long for a bank to refund your money.