First off; my internet service provider says all ports are open; it isn't technically a router but it is a dynamic ip address

secondly; bittorrent gives me an error that says port isnt open, on all ports

now i've looked through google for days trying to find a way to resolve the issue; heres what i have so far

1)it's the firewall blocking access to the ports
2)It's the ISP

It isn't my isp as i've called them
Using windows vista i have uninstalled nortons entirely; and windows firewall which is all that is left is set to allow bittorrent client to do what it wants

I really don't understand why it isn't working now; basically what happened:
I could torrent things fine then i reformatted my computer
I updated everything bittorrent is on it's latest client i havent installed any additional firewalls or anyhing of the sort and nothing has changed with my ISP
I put bittorrents settings back to how they were prior to the format

Where i'm at now though it isn't working at all on any port.
Bittorrent isnt; utorrent isnt and frostwire isn't

Any kind of help would be appreciated

If it matters i am using the bridgemaxx internet service; but as stated it worked fine before the reformat and the isp hasn't changed