Spam text sent from number, number disconnected when called back.

Didn't answer, call back and the number said not in service. They left a voicemall and it was a robot saying my phone has unusual activity and will be discontinued.

It's a scam

I picked up the call and they said my passport is going to be expired so I want to speak with one of their staff. It's a scam because my passport haven't expired yet.

Didn’t answer, phoned back, said number not in service. Probably a scam.