Just wondering who is calling

Claimed to be from a place helping with extended education. Scam.

They called five times over the past three days. I let it ring do to I don't answer it unless I recognize the number. I figure they can leave a message. No message each time they called. Finally I called back and it was a hung up.

Called my work line a number of times over the past week. I never picked it up and they never leave a message.

Called my cell phone six times in two days. Totally annoying.  Block this number on your phone.