Billing

website currently shows that I owe nothing on my Xfinity account, but I have been contacted by a collection agency claiming that I owe approximately $300. I would like clarification on why this debt is being reported or sent to collections when my account shows a $0 balance. Please review my account, explain where this amount came from, and provide documentation supporting the alleged balance if it is valid. I would also like this issue corrected with the collection agency if the balance is incorrect.