That link appears to be more about how bad their installation teams are and nothing to do with the connector on the end of the cable or cutting off services due to it.
It says
“An engineer from Virgin Media knocked at the door at approximately 12:30pm saying that our cable needed replacing as there was a 'noise ingress/egress' issue and our cable was causing problems on the network and for other customers in the area. It was explained to my Mother that an engineer visit was booked in for the morning to see about replacing the cable, any time up to 12pm).”
If that person was not home they would of been cut off and left with a card through the door.