Yes, I was cut off twice.
A little background ...
EFHBroadband was sold to 186k in December 2006. Subsequently, all EFH customers were moved to a different wholesale supplier (Tiscalli, if I remember correctly). During the move, my access was cut off for five days without warning. The support centre staff were less than helpful. Every time I called (and I was calling frequently) I was fobbed off with excuses and assurances that the service would be resumed within an hour, or this afternoon, or ...
Eventually, one call gave a glimmer of hope! "Oh, yes", I was told, "your service has been restored"
"Well, why am I unable to login?" was my response.
They had changed my login details!!
The above is just an example of the lack of communication and support customers of EFH Broadband (indeed any of the ISPs operating under the 186k umbrella) can expect. I would point out they refused to provide a MAC during the time I was without a service.
Ok. Service restored. I calmed down. Anyone can make a mistake. I'll give them the benefit of the doubt. The service is acceptable - when it works. So I continued with them for another two months, until ...
"Your account has been suspended due to non payment of invoices"
WHAT??? They had a CCA on my debit card. My account had been debited every month!!! It took them 3 days to restore my service.
So ... I obtained a MAC, as you do. And migrated.
And got another invoice from EFH ... for continued provision of service, even 'though I had migrated away before the end of the period I had already paid for. My e-mail pointing out their mistake went unanswered, but my account was not debited. I relaxed. Everything is sorted. I'm with a decent ISP with really helpful support staff that speak English (ok, with a Mancunian accent, but I'll overlook that - anyone can make a mistake).
A month passes. I receive another invoice from EFH - for provision of service. My e-mail pointing out their error, and reminding them I migrated away more than a month previously goes unanswered, but no worries, it's probably just a glitch in the system. Then ... funds are taken from my account!!
It took 3 months to recover the money.
And I'm not alone. The 186k forum has (actually had - a lot of posts were removed) a stream of people complaining about incorrect billing.