I don't have figures that I can share, but I can say that a month to month service like ours is a constantly changing thing. We see sign ups and cancellations every month, it's just the nature of a service industry.
I don't believe that we've seen anything particularly out of the norm, even when the network was poor. We're very lucky that the large majority of our clients stuck with us and are now enjoying the benefits of our new network.
We're not at all concerned that we've lost all our clients I think we're still growing (in terms of client base) at a steady rate - to my knowledge