Netflix / threatening call

Few weeks ago, I called up the Customer service as I had some problems with netflix online movie watching feature. The call was very friendly and the next morning when I was at work, I received a call from netflix notifying me that my account was canceled. When I asked about the details, he told me that I made a threatening call the previous day and I said that I would kill the entire family of the agent who I was talking to. I found this very funny and told him that there was some confusion and they need to verify the records before canceling my account. He promised that they will re-verify the records and they will call me again. I never received a call and I followed with several phone calls and e-mails and none of them confirmed a thing. Tired of all this, I thought I will just re-activate my account myself and I went to the website and activated my account. I waited for three days and found that no dvd in my queue was actually shipped and today I give them a call again and they tell me that my account was put on hold. When I questioned the agent again, she told me that netflix has verified my previous phone call and decided to cancel my account permanently. This is insulting. I am very very calm and friendly person and never in my life, I was involved even in a petty fight and now these guys tell me that I threatened to kill and I could easily sense that sarcastic tone of the agent who I was talking to, reminding me that I have an option of filing a petition or lawsuit if I wanted to.

I even requested them to send me a copy of the transcript of the conversation that took place and I can show them the evidence by showing them the list of phone calls I made on that specific day. Of course, they denied sending me a copy.

Guys, I am very frustrated. Please advise me on what I can/should do.

Thanks