Who called from 3475556789

That number has been calling me for a few days now. Same thing. Keep calling every few hours during work day, never leaves message.  I did not answer, but they kept calling. So I pushed answer a couple of times, but quickly ended the call without even listening, but they kept calling. This number has to be stopped!

did not say anything when i picked up, can't call it back

This # is pissing me off, keep calling me and no message. I think whoeve is doing this is hacking into cellphones.. watch out!

It's not a valid number either, so they are spoofing the caller ID.  555 numbers are usually reserved for directory assistance (now usually 411) and has always been the chosen prefix for "fake" numbers displayed in movies and TV shows.  

It's either a marketer or a bill collector.  No legitimate business would need to be sneaky like that.

This number has called 5 times in the past two days. I never answer. They never leave a voicemail.