Virgin Media is great and all that...
...but they have a nuisance mechanism to chuck people off their cable network if they find too much noise coming from a particular source into their street cabs. We had our phone/internet + ondemand services cut off by senior engineers who regularly check cabs. Then normal process is to wait for the customer to call saying their services are offline. After which the home engineer comes down and fixes the issues. Got a £5 rebate on my bill but t'was a tad annoying.
Lovely tech (nice to see how it's all built together) but their customer service needs some what improving to communicate what the hell goes wrong.