I have a Virgin Media package that includes landline call minutes that I never use. My mum lives with us and has a separate landline with Shell Energy (it was originally BT). The costs for her landline package are very high and we're looking to cancel it so she can use our minutes, but all of her contacts use her landline number and nobody uses ours. Would I be able to port the number from Shell Energy to VM so that her contacts will still be able to contact her easily?