FNB freezes all accounts held by foreigners Dec 2018 - xenophobic bank !

In December I was in Sri Lanka when my FNB card suddenly stopped working. In a panic I emailed the Info FNB email, as well as RB Jacobs, Souki Bouzagou, Isidor Jacobs, Mfundo Malinga, and Bright Muyesa. I emailed 5 times over the course of the week, as well as posting and messaging on Facebook, but received no answer. Upon my return to South Africa, I went to the Sandton branch and Mfundo told me that there was no issue with my card. Finally, Bongani Mphato called me to say that in December 2018, ALL FOREIGN FNB clients had their cards frozen. Why did no one from FNB bother to contact me to let me know, or to apologize that this was done in error, or even respond to any of my desperate emails while I was stranded overseas with no money ? (I informed them in November that I would be overseas.) Is FNB xenophobic ?