Incessant Phone Calls

The number 1-800-801-5468 has been calling me dozens of times over the last few weeks. They sometimes even call 2 or 3 times in one day. The company claims to be RX Pharmacy calling about "the order I placed for Levitra" - which is an erectile deficiency drug that would be useless for me, seeing as I am FEMALE. When I try to tell them that I did not place an order, they say "then how did you order?" I get frustrated, tell them to take me off their list, and hang up. Lately I have simply been rejecting their calls. Because I am on the National Do Not Call Registry, I filed a complaint report at http://www.donotcall.gov about a week ago, but the calls have not stopped.