Who called from 4842439051

2 calls this past week,
with CallerID :  Conshohocken PA  and  Unavailable.
No messages.

Called 5 times in a row. Allison from security promotions. Scan

Called 5 times in a row. Allison from security promotions. Scan

This number keeps calling, 8 times so far, and hangs up without leaving a voicemail message.

at this point it has been hundreds of calls how do I make this stop?
It says press 1 for do not call list but that does not work