Can the closed questions beneath (now edited and improved) please be reopened? I welcome recommendations for improvement! Thanks.
How do I tactfully tell a superior that a junior employee continually provides wrong information?
How can I tactfully insist on communicating with someone senior, not someone more junior?
How can I tactfully write that any response confirms receiving a previous email?
To explicitly answer this saddening comment, I answer its quoted questions beneath.
"What is your position ?"
I edited my posts to state that I volunteer at a charity where I help laypeople.
Are S1 and S2 at the same level?
I removed all references to S1 and S2. So my edits don't answer this.
I think the nature of the problem is critical here. Is this job-related, or a personal issue?
Are you a customer of the company? Or the company is a customer of yours?
I'm helping customers of the company.
Is this person your boss, a coworker, or a customer? Why do you need confirmation of receipt? Why aren't email read-receipts working?
The other person is the government. I need confirmation of receipt because the government has alleged not receiving documents. I don't send read-receipts, as they can be judged intrusive.