Who called from 3121875581

keeps calling my mobile too.
no clue as to origination.
notes from pages on internet regarding number indicate it
appears to be either scammers, debt collector, or telemarketers.

Keeps calling my mobile multiple times per day; never leaves a message

Keeps calling my mobile phone multiple times a day. I have never answered it. Last week I had a number with a "147" prefix call repeatedly......same thing, no message and rings three times?

Keep getting calls. Am on Do Not Call registry and still get calls like this. Do not answer.

Keep gettings calls on my home line and I have never answered.  Am also on Do Not Call registry.