they keep calling

I got a new phone just a few days ago, so I found it odd when this number came up. What was more strange was when it called seven times the same day, so I called back right after the seventh call. What I got was an automated message that said "Hi I'm-", then it randomly cut off and the call had ended.

They called and i answered and noone said anything I called back and it didn't ring then a lady came on the line and said it was caribbean cruise line I hung up