surveys from Dubai & call's from iraq

I'm getting strange calls from all over the world from people i don't know, today morning i got a call from Iraq +964,,, i didn't know it was an Iraqi code so i answered:

me: hello
him: hi hi Kuwait
me: who is this?
him: I'm moshari from Iraq and i want to be your friend
(i was like WTF?!)

i hang up and went back to sleep and evening a got a call from the UAE from a company they want to ask me a few questions about the advertisement in Kuwait, why me? come to Kuwait and see for yourself you stupid jerk,,, and the other day was a call from KSA,,,

i don't know who are they or where did they get my phone number from : am i the only one who's getting these calls? it's getting really annoying, i should block all international calls


updated:
5:41 AM, i got a "rannah" from Iraqi number lol when will they stop?