We searched for the name as given and found that the Presbyterian Church of Nigeria is a large, long-established denomination rather than a single congregation, founded in 1846 in Calabar and taking its present name at independence in 1960, and it is a member of the World Council of Churches since 1961 (World Council of Churches, Wikipedia). Calabar is genuinely tied to it, since the office of the prelate and moderator of the General Assembly is in Calabar, and the denomination runs an official site (pcnonline.ng), a Facebook page for the General Assembly in Calabar, a YouTube channel, and a published parish directory. We found no scam reports, fraud warnings or complaints about the church, and no sign of a page made only for show. The listed contact is a free Gmail address, and the entry names the whole denomination rather than one identifiable local parish, so the specific congregation could not be pinned down.
Our conclusion: The Presbyterian Church of Nigeria is a long-established Trinitarian denomination founded in Calabar in 1846, a member of the World Council of Churches, with its prelate's office in Calabar and an official website at pcnonline.ng that our search confirmed. The contact person is given as Creek Town Parish, which matches the historic Creek Town mission area near Calabar where Presbyterian work in Nigeria began, so the local congregation is plausibl
No further action is needed. This report is refreshed whenever the church is reviewed again.