Hey Lad,
Yes, try one of the online foreign exchange sites.
I can vouch for xe.com and have used it many times to transfer funds to several continents, including to Fr Chigbata.
Their rates are better than the banks, and while xe may not have the best rates of all the sites, they transfer to more of the less common countries.
Register with xe, it is very easy and you will have no problem with all the necessary details provided by Father.
I contacted Father last year and he asked for the funds to be transferred in USD.
Hope that helps.
By the way, these Nigerian priests were trained for two years by Fr Ortiz.
God bless,
PV