My service tech installed my services but took the router with him as I didn't need it and was using my own. The monthly charge for the router was on my bill last month so I called (waited on hold for ~30 minutes) and they said that it would be removed from the bill and I wouldn't get charge. Well I got charged and it is still on my bill for next month. How do I get a credit to my account and how do I get it removed from my next and all future bills?