Dont throw in the towel!

You have a dispute over billing.  The Fair Credit Billing Act (FCBA) has a very strong dispute process for resolving billing disputes, if initiated within 90 days of the disputed billing.  Your FCBA dispute rights appear to be in force until Nov 1st.

The FCBA process, unlike the FCRA dispute processes, requires production of factual support on the part of the creditor in resolution of the dispute, and also restricts actions they may take until the dispute is resolved.