Outside of a university or a research institution, the only people routinely called doctor are medical doctors. And their doctorates are MDs and DOs, professional degrees considered lower than a PhD earned through research.
If being called doctor is really important, you need a new job in academia or research where that will happen. If you like the job you have, you will have to accept that it comes with being called Mr. No one is disrespecting you. They're simply behaving according to custom.
You could make a fuss and insist that people call you doctor and maybe they will. But the most likely outcome is that they will think you're a petty and self-important asshat. I think you should find a new job or let it go.
Added: I wrote all of that before OP clarified that other people with PhDs were getting addressed as Dr but OP was not. It wasn't about people with very different titles like Senator or General getting addressed by their titles.
It's caused me to reflect on the many times over the last 50 years in industry and academia that I've worked on teams with some mix of PhDs and folks (like me) without. I can only recall two places, IBM in the 70s and (now-defunct) Prime Computer in the early 80s, where people with PhDs were commonly referred to as Dr.
I think it mostly died out after that. By the early 2000s at Microsoft, where they had lots of PhDs and lots without, I can't remember anyone being called Dr. Even at Michigan, where they had lots of PhDs and lots fewer people like me without, if someone got called Dr, it was on some kind of department press release.
Naturally, I can see why OP would feel disrespected. But it's possible there are other reasons people do this that have nothing to do with OP. For example, is it possible people are simply sucking up to people higher up the food chain? Is it possible some simply aren't aware that OP also has a PhD?
Whatever the behind-the-scenes reasons this is happening, I'm going to stick to my advice, that OP could try to fix this case-by-case, perhaps by approaching people privately in their own offices (their territory) to request equal Dr treatment, starting with the worst offenders. After one or two such requests, OP will quickly know whether this will work without creating hard feelings. If it can't be fixed, OP will need to find someplace else where they feel better respected, or get over it.