I also got a call from the same number yesterday here in the Philippines. I thought it was my relative from South Carolina. I tried to call the number but not in service. ??@#$?
Oh, my god. I just experienced the same thing. I also thought 011-8642-3627837 was the number of my aunt from SC so I called back only to learn that it was an invalid number. I'm from the Philippines and I have recently added my details in some online payment systems. Could this number be a mask of some sort? A good number of people from the Philippines have received a call from this number, and I am beginning to think it's not a person behind this, but something automated. Either that, or the security of one of the payment sites I go to has been compromised and they have acquired my details through it.