ISDN Billing

Well, my ISDN line was working for a month, until I got my bill from Verizon. I have an extra $383.44
of metered usage on my bill. This is suppose to be un-metered service. The only good news is that the business rep actually called and left a message telling me that they made a mistake. I deducted the amount from my bill and paid the rest. Let’s see what happens next month(s).