Siri not pronouncing names correctly -- SUDDENLY

Siri has been great until the last few weeks. She pronounces Jonathan as Yonadon now. I have tried fixing it different ways, including the phonetic way -- that one just puts the phonetic name under his name in contacts. I even called Apple last night, which was useless because the agent could not help me at all. I've got an 16 and it's been upgraded to the latest IOS. Please help!