FNB just does't want to close my account.

I'm out of the country for an extended period and trying to close down my FNB investment account. I closed down my other accounts which was pretty easy over secure chat, kudos to those employees assisting me out there. However I was informed I cannot close my investment account through secure chat, since I'm abroad it's impossible to visit a branch, I also have no international calling abilities so I'm relying on the app's secure chat, social media, email and other modern tech to communicate with my bank. I eventually found an email adress, sent a closure request to this email. Since this whole process has taken some time, the account managed to rack up service fees for an account that is doing nothing. Eventually someone reached out via email and said I need to pay this outstanding service fee amount, which I did. I even sent a screen shot of the proof of payment. They are still not closing the account. I'm just so tired, this has been going on for so long. At this point it feels like it'll cost me less pain and grief just to fly to SA and visit a branch and do it like we did it in the 80's.

I really hope this will end my FNB saga, never again. I'm out of the country so you will not be able to phone my SA cell nr.