Locating the "correct" church often depends on the timeframe you are looking at.
Many of the older church buildings were either replaced due to structural problems or just simply due to the fact they became too small for the congregation.
The assortment of church rganisations in Scotland at different times also means a church may change from/to Established church, Free Church, Presbyterian Church and their associated unified/non unified variants over a period of time.
Kirkcolm Church, the former parish church, was demolished in 1821. It was replaced in 1824 by another church, now known as Ervie-Kirkcolm Church. Site is also listed as Corsewall Graveyard in assorted publications.
By the 1880's there were two other churches in addition to the 1824 Parish Church;
There is also a Free church; and Douloch public