We searched for this congregation and found a real, active church of a very similar name in Mbabane: Evangelical Church Mbabane, described as a branch of the Evangelical Church Eswatini, led by Rev. Sifiso E. Myeni, meeting on Polinjane Road, with its own online radio stream (own website ecmbabane.org), plus a matching Facebook page and YouTube channel we could not open because of the login wall (facebook.com/ecmbabane, youtube.com/@EvangelicalChurchMbabane). The parent body has deep roots, the Evangelical Church in Swaziland having been established by missionary Malla Moe in 1894 (academic paper on Academia.edu). We found no scam, fraud or complaint reports about this church. Warning: the listed country is wrong, since Mbabane is in Eswatini, formerly Swaziland (Wikipedia), not South Africa, and the supplied address evangelicalchurchinternational.org did not appear in any search result or connect to this congregation.
Our conclusion: The denominational website we opened, evangelicalchurchinternational.org, belongs to the Evangelical Church that has congregations across South Africa, Mozambique, Eswatini and Lesotho, and an independent search confirmed a real, active local congregation in Mbabane at ecmbabane.org, led by Rev. Sifiso E. Myeni and meeting on Polinjane Road, with a matching Facebook page and YouTube channel. This body traces back to missionary work begun in Swazi
No further action is needed. This report is refreshed whenever the church is reviewed again.