This company has called me repeatedly.  Since I have caller ID I usually don't answer.  However this morning they called at 4:26 AM.  I received a high pitched beep over and over.  Once before I answered and told them not to call me.  I am on the Do Not Call List for the federal government & have reported this number without any change.  Today I ordered call blocking from my phone provider only to discover that for some reason they can not block this number.  My next move might be to drop the land line.