Help needed,plz any ideas.

I had a call about 3.30pm today the 11th of May,2012 from a female receptionist from an oil firm obviously, my battery was low and so while she was talking to be about having my CV in their possession, she mentioned MO, but I didnt hear her clearly,but it was like mobil. I was so stupid that out of instincts I took my sim card out upon my friend's advice and put in his fone (of course by taking my battery out, I lost all my call logs in the fone) , hoping that she might call back,she never did. The Number she used is 0818*******,I didn't see the other ******* numbers,I called glo network to assist to track and give me the full number from their incoming calls,they said except I have police report (U can imagine). So House please was anyone called with a 0818 number,what is the company and when is the test schedule for,thanx I will appreciate the info.

I had a call about 3.30pm today the 11th of May,2012 from a female receptionist from an oil firm obviously, my battery was low and so while she was talking about having my CV in their possession, she mentioned MO, but I didnt hear her clearly,but it was like mobil. I was so stupid that out of instincts I took my sim card out upon my friend's advice and put in his fone (of course by taking my battery out, I lost all my call logs in the fone) , hoping that she might call back,she never did. The Number she used is 0818*******,I didn't see the other ******* numbers,I called glo network to assist to track and give me the full number from their incoming calls,they said except I have police report (U can imagine). So House please was anyone called with a 0818 number,what is the company and when is the test schedule for,thanx I will appreciate the info.