I've heard this before, Cuban numbers on instead of RHC. I once tried to QSL it when I snagged a recording of DX'ers unlimited that turned into the attencion station. Not only did they not qsl but they stopped sending me New Years cards.
This one was parallel 5885. It used to be a big deal for me when i found Cuban number screwups like this but now ....meh..business as usual.