When promises are broken to other people feel anger and regret like I do?

How many other Birth mothers out there have had the A parents close the adoption for no reason? This breaks my heart and makes me feel like they told me anything I wanted to hear to get my baby. We agreed to a semi-open adoption and I only received 2 packages containing a few pictures, no update like we agreed to. My daughter is now 13 and I will admit, I have looked at her Facebook page. It is the only way I get to see her. I don’t even think they told her she is adopted like they said they would. She looks like she could be their biological child. The reason I think this is because she has listed her ethnic background on Facebook as Italian/Spanish. In reality, she is half Italian and has the dark hair and darker skin like my husband. Her A parents are of Italian/Spanish origin. I have tried to contact the A parents to no avail, they ignore me. Has anyone else had a similar situation? Does it make you angry and full of regret like me?