Please help me handle a security vulnerability

In 2018 I discovered a security vulnerability and worked with both government and business to try to correct the issue. After 6 months of phone calls and emails, I opted to accept their proposed fixes and left the entire thing in the hands of the Government of Canada. My feedback was ignored entirely. I wasted ~100 hours and for that I got precisely nothing.

On December 21, 2022 I required use of the service in question and once again found a security problem. The same problem.

On December 21, 2022 I noted several pieces of evidence which indicate active exploitation of the vulnerability.

On December 21, 2022 I contacted: CBC, The business, NDP, and the OPC. To date, none of them have contacted me except for automated responses. I get that it's Christmas but over a week just to hear anything from any human from any of those organizations? Nothing.

At the most severe, the security vulnerability threatens life and limb. It impacts approximately 2,000,000 people directly and I would estimate the total impact in the 10s or 100s of millions of people. It impacts people globally.

It's causing me too much stress. If you are in a verifiable position of power in Canada, please indicate how I can get in touch with you.

Otherwise, please, any advice you have on how I can get rid of this curse without harming anyone is greatly appreciated.