Further to Mike's comments, if you've had your current package for a while, you're as wise to consider a re-bundle deal and getting the box-swap as part of that.
Look over which channels you watch/need, and compare your current package with the current ones available. Then call up V/M with an idea in-mind for a new bundle, be willing to re-contract for 12/18months, and try to get the box-swap as part of the deal.
This assumes you have VM broadband, as mentioned.
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