What you are asking for is called a ‘number port’, now the most critical thing about this is that for a port to work, the number absolutely has to be active and working, and secondly, there can’t even be any pending disconnection or cease notice against it, even if the disconnection date is sometime in the future.
Unlike the majority of providers, VM don’t deliver the broadband via the phone cable, and neither do they require you to even have a phone line and number. However the onus is always on the ‘gaining provider’, ie VM in this case to do the necessary. So what you could do is allow VM to connect you up as per regarding the broadband (do you have an installation date yet), when they arrange the number port, that, by necessity will also terminate your current phone line and the broadband connection that uses it.
You ‘could’ contact your current provider and cancel the broadband part of your contract as long as the phone line itself remains working. However, I wouldn’t advise that, as should the VM install get delayed (read through a few posts in the Setup section of the forum), then you will find yourself with no BB connection at all. Since you don’t pay VM until such time as it is all up and running, at worse, you may find yourself overlapping and paying for broadband for a month, possibly worth it to avoid complete disconnection.
Either VM connect you up, arrange the number port and all is good, or they don’t - either way, you aren’t without any service.
