I am on the National Do Not Call Registry- this phone number shows up as International C when they call. On 4/23/13 they called at 6:46PM and 7:31PM. Today 4/24/13 they called at- 11:40AM, 12:14PM,12:46PM, 1:28PM,2:04PM, 2:37PM,4:16PM, 4:50PM, 5:23PM, 6:17PM, 6:52PM so far. They do not leave a message. I will update you further as I believe I can take legal action against them.