My virgin media remote has stopped working I can turn the volume up and down but none of the other buttons will work
Have you tried changing the batteries? The volume control is via IR (for your TV/Sound) whereas, assuming the remote is paired with the V6, then that control is via RF and requires more power from the batteries (i.e. rechargeable ones aren't a good idea either).
This assumes that you have a V6 (as this is the V6 section) rather than an old TiVo.
If new batteries don't help then you'd need to contact Virgin (via the phone on online chat) to ask for a new remote,.