dodgy number

Got this number calling me again, and hanging up once I answer.. WTF?

Can anyone do anything about it?

Rings and hangs up. When I called back, message says it is a "hosted contact centre call service" and I may be contacted again. I'm on the do not call register - they shouldn't be calling at all!Scam!

I keep getting calls from this number and when I pick up no one answers!!!!

Rings and hangs up. When I called back, message says it is a "hosted contact centre call service" and I may be contacted again.
I'm on the do not call register - they shouldn't be calling at all!
Scam!

Yup I keep getting the same annoying phone calls as well and it's always when I'm at work and busy and can't answer to see who the mo-fo's are and then they don't leave a message... Grrrrrrrrrrrr And to make it worse I've also had a private # stalking me too.. Why don't they just leave a message? It's so bloody frustrating!!!