The Virgin sales people grossly exaggerate the speed that can be delivered
I went into my local (St Albans) Virgin shop last year and was offered a connection speed of 200 megabytes per second. I said that was unfeasibly large, and that they probably meant 200 megabits per second. The member of staff (who I later found was the manager that day) assured me I was incorrect and it was really 200 megabytes/s. I asked to see the literature and that said 200 Mb/s rather than 200 MB/s. When I explained that that confirmed it was 200 megabits/s, she said it was a printing mistake and it really was 200 megabytes/s. At this time several other colleagues of hers came round and confirmed it as 200 megabytes/s (though one did ask what the difference was between a bit and a byte).
I complained to Virgin, and they said they would train their staff better. However, this year I was stopped in the street by a Virgin salesperson and asked if I changed to Virgin I would get 200 megabytes/s.
Biting the hand that feeds IT
