EasyEquities failure to do a simple email address change

On 6 September I logged a ticket requesting that my email address be changed to a new one as I will be discontinued the existing one, I provided all required personal information via the Easy Equities portal AND via email but still my email address has not been changed, it's been 3 months now. This means that I will not be able to receive important communication about my share portfolio and my EE account in future, who gets the blame when I miss critical comms as I provided all the required information for the email address to be changed?