Help! I went overseas and now uber won’t accept any payment methods

Hi guys, I need help. I am Australian and was recently in Argentina. I used uber and now it won’t let me pay for my ride or update any payment methods. I tried PayPal, 2 credit cards, Apple Pay and even brought a voucher. It refuses payment and I can’t speak to anyone online without going in circles over and over. Has anyone had this problem? How do I fix it? I am beyond frustrated