isnt it up to them to prove you HAVE downloaded the film, rather than you prove you havnt? an IP address isnt proof enough, as it can be changed.
tell them you want more proof!
I thought so to.
All I know is that the process goes as follows:
Ipoque detects a file are being illegally downloaded and goes to the law firm say, "Hey, look we got another one! Here's the connection details/IP address it was downloaded by."
Lawyer looks up IP address, find who the ISP is and contacts them, asking to put a name to the IP address at the time of the download. Sop whether the IP Address has changed since doesn't matter.
Someone gets a letter in the post.