Xfinity mobile complaint

Signed up for Xfinity mobile last year, and cancelled the next day (5 hrs on phone with rep to complete the “special deal” including free watches).  Took numerous calls to finally complete the cancellation.  Free watches still sent, and refused upon delivery.  Never used any mobile services (no calls, no texts, nothing).  Apparently after all this hassle we still owe $97.08 for service we never used, and now this bogus fee has been turned over to a debt collector.  You have got to be F’n kidding me.  We have been long time customers who always paid our debts.  Please check your records and do the appropriate thing.  Thank you,  DAN HURLEY.