just got a message from this number with an attachment saying: "is this the usb cable from Apple everyone's talking about??"
I did not open the attachment and have blocked the caller.

Looks totally like spam to me!!!!!!!! I got told I won a $50 FB voucher and I most definitely did not sign up for that.

this is from an Australian based company that does customer audits and mystery shopping. You must be registered with them to receive messages so it is ligitimate not spam