Refund

Xfinity charged me for internet services that were never activated and never used. I'm trying to get a refund for those services. Xfinity confirmed that there was no usage. They have given me different answers on the refund (giving me the run around instead of solving). First, I was told I'd be refunded 7 months, then another agent told me 3 months, and yet another told me 4 months.

Xfinity personnel made mistakes from their end. They had the ability to first back date for 4 months and then close the account (giving a refund). However, the agent first closed the account (instead of back dating) and then told me he could no longer back date. That is the incompetence of Xfinity and not the customer. The incompetence from xfinity needs to be corrected. It is not on the customer. 

1. How do I get my refund?

2. How do I file a dispute?

3. How do I get a hold of internal xfinity policy that should be disclosed to the public?