I'm assuming you already have VM broadband, in which case your new TV box will be a TV360 not a TiVo... I've moved your post.
You say about being billed for the service, but haven't received a new contract - something's a little wrong there for starters. If you login to your myVM online account and check your contract, does it include the TV service?
If it doesn't, that potentially explains what's happened and I'd be very interested to see a bill with it on.
If the contract shows it, then post back with confirmation.
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