Can't migrate Java account because of no access to email and Mojang Support went silent.

My minecraft account was created back in about 2017 with a gift card. I didn't know that my email would be deleted if I didn't actively use it so now it supposedly doesn't exist anymore. I need the email in order to Migrate over to a Microsoft account but I've been unable to.

I created a new email, and I've contacted Mojang/Minecraft support about changing my email and they said they would take my problem to a company representative. They so far haven't said anything else afterwards and it's been over 3 weeks. I've since been locked out of my Java account and trying to contact Mojang/Minecraft support has lead to no response.

Does anyone know if there is anything else I can do to get my email changed so I can migrate my account?