They refuse to service churches, period. A black church may be refused because they are a church, not for racial reasons. This same person will also refuse to service a white church, for the same reason.
However, now that Biden is in (and soon Komodo Dragon Harris), that will be illegal. A jokehovian that refuses to service a black church will be penalized (even if the same jokehovian also refuses to service a white church in a different area). The "We don't service churches because of our religion" excuse will not stand because of Komodo Dragon and its minions. Even if they also refuse to service a white church. Even if they do service other black-owned businesses in the same area as the church.
And whatever happened to freedom to service (or refuse) based on simple business decisions? This reminds me of an incident where a Christian baker refused to make a wedding cake for a gay wedding. Which is a decision they had the right to make (good business aside, since someone else could have just as easily made that cake). But no, they got forced to make that cake under threat of being closed down. And now it is even worse--and will get even worse under Komodo Dragon. (Who probably will not just shut that cancerous religion down.)