No. The stolen bandwidth in question is between L3 and Comcast, not between you and Comcast. It's "stolen" because they had a contractual agreement which L3 is breaking, which is perhaps stretching the meaning of "stolen" but is defensible, I think. (Or at least so the story goes, I can't vouch for any element of it.)
This is all sausage making details that go on all the time and shouldn't and probably still won't actually involve you.