Unlogged battles

Hi might seem a little left ball but has anyone else experienced this.
It’s happened a few times now where I’ve won a battle twice on pvp and when I’ve gone into pvp log the opponent is not logged.
Last night in pvp my team got annihilated with the first turn by the opponent which I thought was unheard of in itself but again that guy wasn’t in the log niether.
I have to say they weren’t all the same teams or on the same days.