Dish network Unauthorized charge Nationwide

 I contacted the Dish network website phone number supplied from web site to become a possible new customer.The rep.that I talked with presented what sounded like a good deal.Going forward with the deal I had made clear understanding that I would not be moving until April so do not charge me until then we'll the next morning I see I was charged $49.95 and I was overdrawn at this point.I called the number with his extension and it rolled back to dish main number and they told me that they had no idea what the ext number was and who that person was and they could not refund me for 3 to 5 days.Asking to talk to a supervisor they put me on hold and hung up.This made me furious and I called 4 more times with the same result.then in a email I have another invoice showing another install response for Comcast.I have been scammed..What a day..Please help me