xfinity or Comcast Unethical company, Billing issues! Gurnee Illinois

If any of you have xfinity/Comcast, drop them quick! They are Liars and Thieves! They promise you one thing and then don't deliver and charge you outrageous fees! 3 months I've been dealing with them over $100 folks! Each rep has told me it would be credited back and nothing! Completely Unethical Company, it's not the fact it's a $100, it's the principle behind proper business ethics, apparently Comcast/Xfinity doesn't have any ethics or common sense, and doesn't honor what their employees say.