FNB Forex App and Online Error + Zero customer care

I am struggling to convert USD to ZAR using the Global Account. I have involved my personal banker VS on several occasions, she claimed to liase with FOREX, but a month later and still we cannot find the problems. On the FNB app, it keeps asking for a fax no as mandatory field, thus preventing me to convert funds. On the online profile, when trying to use code 303 supp**** by Forex, it again prevents transfer as it does not recognize the BOP code 303. You also cannot search for the right code. Several requests were made to contact me, but there is no real urgency or progress on this. No one has called me back on my DRC mobile as requested. I have tried to resolve but this is really the worst customer service ever ...and worst is, I am stuck with FNB until my return to SA in a few weeks ...Horrible