Showed up on my cell phone - called at 12:39 am (did not answer)

Called at 12:56 a.m.  Not acceptable!  Scared me to death since I have an 18 year old son who was out and about!!

I recieved a call at midnight on 6/18 - and called promptly at 6:30 am the next morning and had my number placed on the DO NOT CALL Prompt the automated service directed me to. I get to work today and low and behold another missed call from this number....what part of... DO NOT FREAKING CALL... OMG...how or what number to I need to call to get the DO NOT CALL FEATURE to actually work??? WTH?

I called and rather than asking to be put on the "do not call" list, I hung on.  I rec'd a msg that all cust svc people were busy and asked to leave a msg.  I then screamed into the phone as loud as possible and suggest we all do the same.  Then I called back to be put on the do not call list and like that will really happen.

Called me at 9am. Rang twice and they hung up. What's the purpose???