BREACHED???? TRUE?? fALSE??

The calls are definitely spam you can block them see these articles https://support.apple.com/en-in/HT201229

https://support.apple.com/en-in/guide/iphone/iph3c9947bf/ios

https://support.apple.com/en-in/HT207099

Absolutely a scam. Do not believe these. You can also call Apple support if you still feel unsure. I am sure they will answer that question for you and for no charge. I am no expert at these type of things. But If I got a message like that I would just ignore it. Best of luck to you.

Such calls are scams from criminals trying to steal your personal and financial information.

Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams - Apple Support