Got text message from Apple about my verification code?

Hello guys, all of the sudden i just recieved three text messages from "Apple" which was about verification code, as if someone is trying to login into my account. I got three different verification code AND someone also tried to call me, which i think was "Apple". The phone number that tried to call me was: +***, should i be worried? I've changed my password and the security question just in case. But is this something Apple usually do?

<Edited by Host>