Privacy Control - need permanent block

Privacy Control in NIS2009 allows me to block the sending of credit card info on a one-time basis. There is a website that tries to get one of my credit card numbers (the URL begins: au.download.windowsupdate…) dozens of times every day for the past month or so. Having to stop what I’m doing and click to “Block Once” that many times is frustrating. Isn’t there a way of setting it to automatically block that website’s request in the background so I don’t have to deal with it personally each time? A “Block Always” setting that I would need to set up just once is what I’m looking for. How can I do it?