NEDBANK USELESS ONLINE BANKING

I have been using Nedbank Online Banking almost since they first introduced it.It it totally user unfriendly,exceptionally slow and cannot begin to compare to the "old" Internet Banking.Since the last weekend I am unable to log into Online Banking and keep getting a message "Busy with Maintenance".On calling the Customer Care I was informed that they have been inundated with the same complaint and suggested I use Internet Explorer instead of Chrome until they sort out the problem.This is totally ridiculous...why should I have to change to another browser when it has always worked on Chrome. Nedbank you are supposed to be improving your Online Banking not making it a irritating experience. I have reverted to the old Internet Banking which works perfectly on Chrome.PLEASE SORT OUT YOUR PROBLEMS