They don't want your correct details!

I'm not an FNB customer, but I am forced to use their platform to withdraw money from PayPal sent to me from the US. Over time almost ALL of my details have changed and I am trying to get those updated and corrected. When I try to submit my corrected details I get the error message "No data returned from request". It really is high time that another Institution takes over PayPal services, FNB is longer the Bank I once knew and trusted.