Who called from 2107744491

Called me on my mobile number.

Survey call

Voicemail message stating I'd won a free cruise --- if I'd complete a telephone survey.  Blocked.

I received several messages from this number,  they left a VM stating there's an excellent proposal, don't answer or callback it's a scam

This number calls me several times a week and every time I answer, there is nothing and no one on the other end.