unfair business practice

My payment was due on the 5th of march and I normally pay my account by the 1st on the identity website via card payment, however the identity website was not working from the 1st of march and eventually started working after the 5th of march but the online payment option to date still does not work. I eventually found out that I can do an eft and paid my account in full. When i called the identity call centre i was informed that my account will be listed as a default for late payment. how is it my problem now that your website is not working? if this is not resolved immediately i will close my account and never buy from identity again.