I encourage you to report any behavior you believe to be illegal or unethical to both your local realtor association as well as your state agency. That’s why those organizations exist and we are all better if people are held to professional standards.
More like the selling realtor “forgetting” to take a call from a competing buyers agent and keeping it in-house. It happens all of the time and cost the sellers money.
There’s also many scenarios where real estate folks steer certain ethnicities or religious practitioners away from some areas.
As said earlier, any and all discrimination is illegal/unethical and there are checks in place to prevent it from proliferating. Anyone who is a victim can report a HUD fair housing complaint form, contact their local state's office of fair housing, or contact their local Association of REALTORS® to report an ethics violation.
And people do report:
> The most important finding of this report is that the number of housing discrimination complaints increased significantly in 2021, despite the fact there were fewer agencies reporting complaint data. There were 31,216 housing complaints in 2021, an 8.7 percent increase over the number of complaints filed in 2020. At the same time, there were seven fewer agencies that reported data in 2021 than in 2020. Had all fair housing agencies been able to submit their data, undoubtedly the number of reported fair housing complaints would have been even higher.