Cancelled ippon to wazari and osaekomi
Yesterday I threw my opponent for wazari (it felt like wazari to me) right into osaekomi and started the hold. But the referee said "Ippon! Sore-Made!".
Almost immediately after we stood up they downgraded ippon to wazari.
I know this happens not too infrequently. Anything a competitor can do in such situations?