Was sent odd e-mail about Internet cancellation request, when I never made one.

I have received an alert from Xfinity that said I just cancelled my service today (subject: We received your cancellation request) but I never actually cancelled anything. Currently it's listed as a "pending order" under My Plan but I never ordered anything at all. Email says today is the last day of service. I do not want internet  to be disconnected at such a crucial time when I rely on it for many uses. I want the cancellation request removed & I want to continue my service. Thank you.