Non existent service fromFNB

It has been almost a month since I made payment into a foreign account. The bank account number was incorrect. I then called on 13 December 2019 and asked for an amendment. I made follow up calls on 14th December, 17 December, 2 December and 6 January 2020. The issue still remains unresolved. I was advised that Buyi Luvunyo was handling the case, i have sent her two emails, she has not bothered to reply. I was then assisted by Brandon Carolus who has since disappeared since our last chat on 9 January 2020. Even though i had specified on email what I required from him, I was advised today he is conveniently on leave. I called in this morning at 11h03 and spoke to Refilwe Mampe, she advised that the system was slow and said she would call me back, and she still has not. I called again at 13h35 and spkoe to Moriri and advised that Refilwe was on lunch. After explaining to him what my issue is, he informed me that Buyi Luvunyo was handling the case. He has since then took my contact details and told me that he was going to send an email to Buyi to advise, I am still waiting. This has got to be the worst service from a bank.