Caller said something to the effect of, "well, you remember the purchase you made at Wal-Mart." I told him I was on the Do Not Call list and that he was to remove my number from their database and I hung up.

Someone calls from this number daily sometimes more than once a day and hangs up everytime I answer.

Same thing here calls I answer and then it hangs up
You can't call back because the line is disconnected ...

Call comes in.  Goes to voice mail.  Nothing left in voice mail.  Happened several times.

Calls listed under cellphone, answered it and asked why this is under a cell number and they hung up after i asked several times, called the number back and it went to a guy saying someone is using their number for spam and he's been called numerous times everyday