Who called from 6478491389

Got a call on Thursday from this number I answered and just silence. Then they hung up.

Delay in speaking then asked for my husband by his first name. I asked who was calling and she said it was The Pink Diamond Club. Who is that?!

This number calls me ALL THE TIME!  I've answered once or twice and complete silence on the other end so now I just don't answer and they leave no message.

2nd call in 5 days.  I let the machine get it and nothing.

They keep calling and I still don't know what for.
Hope somebody do something to fix this before I get angry