Who called from 3050000000

My friend is getting phone calls from this stranger and they mostly call three or two times a day and hang up when u answer I don't know if this is a joke or prank but u better stop Or we will bring u down

Never call them cause my friend did and she asked them why did u call us and and give me some info they harassed her so never call

It's August 31/12 today and we have been receiving at home an increasing number of calls a day from this number by someone who remains silent when the call is answered and then hangs up.  We no longer answer but the caller keeps dialing our home phone number again and again.============

Annoying calls at all hours of the day=3050000000

I get at least 5 calls a night from this number usually after 8pm. want it stopped.