I guess this could be argued as never-were in this guise, as the three Nakhoda Ragam-class corvettes, a variant of the F2000 design, were built for Brunei but were never accepted due to contractual issues and all three were never delivered. They were laid up from 2007 until 2012 when they were sold to Indonesia by Brunei (via Lurssen) at only one-fifth of their original price.
MConrads drew this class many years ago, but it was dated in style and sadly incorrect in many details.