Hi virgmediasucks
VM haven't been deleting your posts, however they are scattered across different forums.
You can see your posts are still there via your forum profile
https://community.virginmedia.com/users/virgmediasucks/948321
VM do ask forum users not to post multiple threads on the same topic. This slows the forums down for everybody, tying up forum staff resources.
Have you tried the online moving home process?
https://www.virginmedia.com/help/moving-home
The phone lines may be busier than usual today due to customers calling regarding current broadband issues.
https://community.virginmedia.com/discussions/Wireless/degraded-broadband/5621777
When calling VM will need the memorable word from your account (telephone password) which is normally different to the account password. If you don't input any details then the call may still be picked up by staff and they can ask other account related questions to verify you as the account holder.
Forum staff can send out a password reminder by post when they pick up your thread.
Have you tried to reset your account password via the following page?
https://www.virginmedia.com/identity/forgotten-details/password