<Raises hand.> I have. Sometimes successfully, sometimes not.
Two successes:
- I'd determined that a large email provider was transiting a sizeable fraction of all 419 spam I was seeing (and knew that this was likely broadly representative). Looked up the product title with "project manager" and similar terms, called the corporate switchboard, and asked for them by name. Phone picked up on first ring, I explained the situation briefly, fifteen minutes later I received a call from the manager in charge of that area, who leptnin touch over the next three months as the issue was resolved.
- Another time worksite had issues with another email service provider with glacially slow processing of our notification emails. Performed an executive email carpet bomb[1] after months of ineffective helpdesk attemps, with evidence of the issue. Was assigned a minder who helped resolve the issue.
Both were large companies (at the time), one I'm distinctly not inclined to consider favourably. Both responded exceeding expectations.
Then there is Google....
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Notes:
1. See https://www.nytimes.com/2017/05/05/your-money/the-best-consu...