time warner cable TWC Austin ROBO CALLS/ (210)892-3339 No person on line Caller ID says "ANONYMOUS" Austin, Texas Nationwide

I am a Time Warner Customer paying for non poblished home number getting robo calls from (210) 892-3339 with no one on the line. these began at 9:49am on 9/11/14. Caller id showed anonymous. Then within 24 hours on 9/12/14 I was robo called again at 10:06am same caller id & nobody there. Two days in a row it woke me from a sound sleep. I finally called back only to find it was time warner. The rep had no clue what she was doing. I spent all day dealing with reps that did nothing but waste my time. I pay them for a non published number & they robo call me with no id name. I then have to spend the day dealing with reps who are poor at what they do.