Who called from 2392202850

I received a call from +2392202850 at about 11:58pm Nigerian local time 18th December, 2011. I missed the call and I tried to call back to no avail.. I will like to know the caller and for what purpose.
Thank you.

hi ,
yesterday i got a miss call from the same number !!! do you know it from where?? i am from Tunisia
thank you

hi ,
i got a miss call from the same number ?? i am from Tunisia olso
thank you

yesterday i got a miss call from the same number ! and my sister too!!! do you know it from where?? i am from Tunisia.
thank you

Me too, the same number call me this morning, I think that is kind of scam, when i try to call the number back, they take a lot of money from my phone card, Don't try that!