Strangely enough I have heard of them, but don't know that much about what they teach....
they are a splinter group from Worldwide church of God, whose starter was a man called Hebert Armstrong.. a wonderful man in my opinion.
I met Mr. Armstrong a few times and believed he was a true follower of Christ, but there was few he dis-fellowshipped an they started churches.
When Mr. Armstrong died these bought some of his copyrights and started teaching Armstrong but with a slight twist of legalism added. PCG is one
is one of these splinter groups who teach about Mr. Armstrong as a prophet and teach bondage in Christ in subtle ways... lol
Do you attend SDA as your foundational church? just curious

In Christ's love