Complaint regarding cancellation

My account was on auto pay for my Xfinity alarm system $77 a month.  You added a $140 service technician fee to my bill when I  opened a Comcast Business account.  Xfinity Home closed my account and added a technician cost to it stating I had to have a residential line versus a business line and that is way they stopped my auto pay.  Instead of contacting me you allowed me to go to charge off because you automatically cancelled by Xfinity.  My May statement shows card will be used then nothing until I got a notice form a collection agency that I have a charge off on my credit.  No contact at all Reported to credit bureau 5 months later as a charge off Refuse to acknowledge any wrongdoing No statements because I was paperless I paid the charge off as it impacted my score by 29 points and I want the charge off removed. 3 days/9 different 800#'s and approximately 8 hours on the phone and still cannot reach anyone that can discuss this.  I filed a complaint with the CFPB and they have forwarded it to the FCC/FTC. I ama current business comcast customer and this is unacceptable from a company I have been with for over 15 years. I do not expect much from this either but at least it is now public and hopefully others do not have the same issue.