Few years ago (my shirtcoin phase), I had a non-KYC'd account with kraken. Send a larger amount (within their non-KYC terms) in and the blocked it and wanted to do a KYC.

I told them that it's not going to happen and asked them to send the coins back where it came from. They kept saying their shirt, I kept asking them to send it back - like an autistic child. Kept contacting them on socials, kept sending copies to all their channels, after a month, they gave up.