pfvspnf, I see you are from Lagos, and I want to apologize in advance if you take offence to my post.
I have been operating in Africa for many years, and am currently on contract in West Africa. Nigeria and scammers have unfortunately become synonymous - despite some good Nigerians in the industry, I would strongly advise anyone not very familiar with this part of the world to be very, very cautious when dealing with any Nigerian company. History has shown that you will be scammed, or at the very least, be exposed to some level of extortion, almost 90% percent of the time when it comes to offers of employment.
If you really want to fly in West Africa, look further north to Ghana, Cote D'Ivoire or Senegal, or south to Gabon or Congo (not DRC!).