I answered a call from this number and they hung up on me

They have called several times the last two days. I am on the no call list. They don't leave a message.

called 4 x in 24 hours, never left a message. called the # make and they reported that my phone # was associated with someone who has diabetes and they were calling to offer me supplies and they would bill my insurance company for me.  !?!  im not diabetic and dont need supplies.  The clerk on the phone was polite and said he would remove my # from the call list.