Who called from 2149072653

Answered but they hung up as soon as I said hello/our business name. Tried calling back but got a busy signal.

Despite blocking this number on my cell it still rang. Who ever it is hangs up. What could they gain from this?

Called my cell phone and was an automated machine talking saying they are from the US Department of Education. Tried to call back, no answer

phishing / spam caller

This number came up when I answered.  A recorded voice said: "Congratulations, you just won a free cruise to the Bahamas."  I hung up.  I had not received this type of spam call on my cell previously until today. Think it may connected to the same wrongdoers who use the "IRS" scam using the number: 240-762-6347 ("Call back immediately, as it is urgent!"), as I used my cell phone to call these IRS scammers back yesterday, and now they have my land line number and my cell phone.  Lucky me!