You do the job they want you to do, and you do it well. It’s their company, not yours, they make the rules.
Do the job right to the best of your ability. If you feel you deserve more then they are giving you, take a hard look at it from their side and see where you are deficient in their eyes. Then correct it to make yourself more valuable to them. Or if you feel their expectations are unrealistic (very possible as I have had bosses that wanted a lot more then the pay rate deserved.) find another job.
The world is full of other jobs, move on. Or start your own business.
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You can run, but you'll only die tired.