Inconveniencing customers with no access to credit facilities

I have been trying to log in the self service portal and even contacted their call centre to request a cash advance over the past week. Their systems have been offline for a week now which means customers don’t have access to any services including the cash advance option. Very inconvenient that you don’t have access to their services when you need it and shocking that such a big business can’t fix a major problem in a week.