Hello @Jocelyn373 & welcome to ABB CC from across the Tasman Sea in Auckland, New Zealand.
Did Customer Services explain where the Technical issue has arisen?
Is it within the banking system?
If so where ?
Have you checked your own Listing Account settings and reset them in case they have changed without your knowledge?
I raise this as there have been known cases of unlawful access to users accounts.
Hope this helps, meanwhile keep contacting them and maybe try via Twitter as they apparently tend to be more efficient.
All the best